Database of O'Hara Persons
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Search Results: Main Table
| id | Forenames | Surnames | Dates | Locations | Origin | Entries |
|---|
| 2589 |
| 2060 | ? | O'Hara, O'Harra, Bryan, Wolfe | IR | CORK | 840, 875 |
| 797 | ? | O'Hara | 1908 | NE | 299, 349 |
| 2346 | ? | O'Hara | c. 1905 | PA | 983 |
| 2347 | ? | O'Hara | c. 1907 | PA | 983 |
| 2348 | ? | O'Hara | c. 1908 | PA | 983 |
| 822 | ? | O'Hara | 1832-02-12 | AU ? | IRELAND | 310 |
| 1078 | ? | Hoar, O'Hara | 1910, 1981 | 422 |
| 824 | ? | O'Hara | 1818 | IR | MAYO | 297 |
| 2111 | ? | O'Hara, Gottsche | IA | 881 |
| 326 | ? | O'Hara, O'Rourke | OH | 269 |
| 327 | ? | O'Hara, Regan | 1960 | NJ | 080 |
| 612 | ? | Schintz, O'Hara | PA | 384, 385 |
| 358 | ? | Booth, O'Hara | IL | 089 |
| 2154 | ? | O'Hara | 1797, 1830 | EN | IRELAND | 915 |
| 1662 | ? | O'Hara | IR | WATERFORD | 742 |
| 174 | ? | O'Hara, Strait | OH, WI, IA | 038 |
| 1994 | ? | O'Hara, Kay | PA ? | 830 |
| 1995 | ? | O'Hara, Schoyer | PA ? | 830 |
| 1996 | ? | O'Hara, Ammon | PA ? | 830 |
| 1997 | ? | O'Hara, Beacher | PA ? | 830 |
| 1772 | ? | Hamilton, O'Hara | 1769 | IR | DERRY | 784, 883, 992 |
| 763 | ? | O'Hara | US ? | LEITRIM | 265 |
| 2172 | ?, matriarch | Macduffie, McFee, O'Hara | 1500s | IR | IRELAND | 928 |
| 1177 | ?, girl | O'Hara | 1966-08-05 | OH | 495, 635, 637, 638 |
| 181 | ?, Mrs. | O'Hara | 1823 | IR | ANTRIM | 271 |
| 182 | ?, Mrs. | O'Hara | 1823 | IR | ANTRIM | 271 |
| 359 | ?? | Booth, O'Hara | IL | 089 |
| 626 | Abe | O'Hara | NH ? | 189 |
| 2169 | Ada ? | O'Hara ? | NS, ON ? | 925 |
| 2577 | Ada, A. | O'Hara | c.1860, 1880, | IL | 1 1 0 6, |
| 2736 | Ada, Bridgit | O'Hara | 1850s, 1860s, 1880+ | NS | 1 1 9 5, |
| 1781 | Adelia | O'Hara | 1812 | NY | 784, 883, 901 |
| 1061 | Aeneas | O'Hara | 1909 | IR, AU ? | ANTRIM | 693, 702, 757 |
| 1290 | Agnes | O'Hara | 1874?, 1881 | SL | 538, 539 |
| 2058 | Agnes | O'Hara, Solomito | 1900, 1924 | MT, NY | 839 |
| 2103 | Agnes | O'Hara | 1918 | NY | 880 |
| 2122 | Agnes | O'Hara | PA | 889 |
| 2381 | Agnes | Donald, O'Hara | 1845 | SL | 1 0 1 6, |
| 2382 | Agnes | O'Hara | c.1845 | SL | 1 0 1 6, |
| 1385 | Agnes | O'Hara | IR, SL ? | ANTRIM | 592 |
| 891 | Agnes | O'Hara | 1851 ? | IR, SL | ANTRIM | 309 |
| 1407 | Agnes | O'Hara | EN | 602 |
| 133 | Agnes | O'Hara | PA | 034 |
| 135 | Agnes | O'Hara, Smith | 1880 | MD | IRELAND | 368 |
| 1257 | Agnes | O'Hara | 1866 ?, 1881 | EN | 764 |
| 659 | Agnes, Helena | O'Hara | 1893 | ON | 238 |
| 2748 | Agnes, Mary | Oakes, O'Hara | 1891-07-14; 1893 ?,1980-12, | NJ | 1 2 0 1, 1 2 0 2, 1 2 0 3, 1 2 0 4, 1 2 0 5, 1 2 0 6, |
| 970 | Agnes, Nora | O'Hara, Rifen | 1892-11-25, 1919, 1976-01-26 | IA, CO | IRELAND ? | 358 |
| 1929 | Agnes, Sister, Stephen, Marie | O'Hara | 1889, 1950s | NY | 804 |
| 1253 | Agnus | O'Hara | EN | 528, 764, 811 |
| 1579 | Albert | O'Hara | MA | 701, 704, 717 |
| 376 | Albert | O'Harra | 1 0 1 1, |
| 455 | Albert | O'Hara | 1895, 1985 | OH | 262 |
| 1231 | Albert | O'Hara | IL ? | 825 |
| 231 | Albert | O'Hara | MA | 086, 827 |
| 1775 | Albert | O'Hara | 1779 | NY | 784, 883, 901 |
| 1750 | Albert, Bert | O'Hara | 1882 | IA | 781 |
| 2412 | Albert, E. | O'Harra | 1849?, 1850?, 1870+ | NY | 1 0 3 7, 1 0 3 8, |
| 401 | Albert, Richard | O'Hara | MO, TX, CA | 106 |
| 904 | Alberta | O'Hara, Thompson | 1903-03-10 | OK | 321 |
| 1492 | Alberta, M. | Maguire, O'Hora, O'Hara ? | PA | 659 |
| 1420 | Aletha, Eliz. | Morehead, O'Hara | PA | 605 |
| 1743 | Alfred, Mary | O'Hara | 1901 | ON | 770 |
| 425 | Alice | O'Hara | 1874 | CN, NY | 115 |
| 1588 | Alice | Hurley, O'Hara | 1893-09 | MA | 701, 704 |
| 1607 | Alice | O'Hara | IR | MAYO | 708 |
| 1911 | Alice | O'Hara, Leonard | 1876-08-29; 1915-05-05 | NY | 804 |
| 632 | Alice | O'Hara | 1926, 1940 | IR | DUBLIN | 193, 232, 363 |
| 911 | Alice | O'Hara, Orosz | US | 324 |
| 1204 | Alice | O'Hara, Cadarette | ME ? | 501, 500 |
| 370 | Alice ? | O'Hara, Louzon, Lauzon | MI | 097 |
| 1199 | Alice ? | O'Hara | 1980? | ME, FL ? | 500 |
| 1395 | Alice, G. | O'Hara | PA ? | 596 |
| 588 | Alice, Gertrude | O'Hara | MA | 179 |
| 1391 | Alice, Gorton | O'Hara | PA, IN ? | 595 |
| 2681 | Alice, P. | O'Hara | c. 1918, 1930+ | MO | 1 1 5 1, 1 1 5 7, |
| 967 | Alma | Brennan, O'Hara | 387 |
| 204 | Alva | O'Harrah | OH | 046 |
| 1308 | Amanda | Hawley, O'Hara | 1891 | ON | 681, 683, 684, 558 |
| 308 | Amanda | O'Hara, Gray | WI | 418 |
| 172 | Amanda | O'Hara, Gray | OH, WI, IA | 038 |
| 835 | Ambrose | O'Hara | ON, PA ? | 305 |
| 343 | Ambrose | O'Hara | 1857, 1926 | NY | 114 |
| 421 | Ambrose | O'Hara | 1857, 1926 | CN, NY | 115 |
| 387 | Ambrose ? | O'Hara | US | 122 |
| 2633 | Amelia | O'Hara | 1860?, | GA | 1 2 3 2, |
| 86 | Amelia | LeCure, O'Hara | 1871-10-09 | QB | 022 |
| 1976 | Amelia | Lacure, O'Hara | CN, IL ? | CONTINENT, FRANCE | 821 |
| 1065 | Andrew | O'Hara | 1900, 1910 | NY | 409, 412, 413 |
| 1071 | Andrew | O'Hara | 1900, 1910 ? | NY | 409, 413 |
| 2615 | Andrew | O'Hara | MI, IL | 1855, 1870, | 1 1 0 4, |
| 1864 | Andrew | O'Hara | PA ? | 794 |
| 2208 | Andrew | O'Hara | 1878 ?, 1881 | SL | (942), 955 |
| 2708 | Angela | O'Hara, O'Connor | 2004+ | IR ? | TYRONE | 1 1 8 8, |
| 1506 | Angela, Marie | Mataya, O'Hara | 1967-08-05 | MO | 659 |
| 1010 | Angelia | O'Hara | NY ? | 369 |
| 2061 | Ann | Latham, O'Hara | c. 1790 | WV | 841 |
| 1298 | Ann | Penn, O'Hara ? | 1840s | MD | 552 |
| 1571 | Ann | Murphy, O'Hara | 1889-09-29 | MA | 701, 704 |
| 2352 | Ann | O'Hara | 997 |
| 1847 | Ann | Hurley, O'Hara | 1873, 1878 | 790, 906, 910 |
| 2370 | Ann | O'Hara | 1835, 1860, | GA | SLIGO | 1 0 1 0, 1 2 3 2, |
| 1860 | Ann | O'Hara | PA | 794 |
| 1350 | Ann | O'Hara | 1850? | IR | IRELAND | 581 |
| 2124 | Ann | O'Hara | PA | 889 |
| 1613 | Ann | Slattery, O'Hara | CT | 708 |
| 1629 | Ann | O'Hara | 1924 | PA | 721 |
| 2209 | Ann | O'Hara, Haring ? | 1993 | PA | 943 |
| 684 | Ann | O'Hara | 1849 | NY | ARMAGH | 214 |
| 2226 | Ann | O'Hara | VA | 954 |
| 2515 | Ann | O'Hara | 1853, 1860+ | NY | 1 0 8 2, |
| 2011 | Ann | O'Hara | 1854 ? | MA | IRELAND | 835 |
| 989 | Ann | O'Hara | 1848 | ON | IRELAND | 766, 767, 769, 770 |
| 2291 | Ann | O'Neill, O'Hara | 1830, 1848-12-11; 1899 | IR, PA | SLIGO ? | 891 |
| 2096 | Ann, Annie | O'Hara, Oakes | 1842/1843-07-25; 1865-10-29 | ON, WI | 873 |
| 1608 | Ann, Annie | O'Hara | US | MAYO | 708 |
| 1498 | Ann, Marie | Dougherty, O'Hara | 1957, 1966 | PA | 659 |
| 1921 | Anna | O'Hara | 1951-05-21 | NY | 804 |
| 513 | Anna | O'Hara | 1937 | IR | MAYO | 477, 584 |
| 2318 | Anna | O'Hara, Cahill | 1902 | PA ? | 981 |
| 2601 | Anna | O'Hara | 1837, 1870, | IL | IRELAND | 1 1 0 5, |
| 1066 | Anna | Loftus, O'Hara | 1900, 1910 | NY | 409, 412, 413 |
| 1111 | Anna | O'Hora, O'Hara | 1850, 1880 ? | NY | 436 |
| 1632 | Anna | Ginnity, O'Hara | 1868, 1936 | PA | 724, 728 |
| 611 | Anna | O'Hara | PA | 384, 385 |
| 102 | Anna | O'Hara, Heavey | 1895 | NY | MAYO | 116 |
| 1669 | Anna | O'Hara, O'Malia, O'Melia | IR ? | 778 |
| 1438 | Anna | O'Hara | IR | MAYO | 631 |
| 429 | Anna | O'Hara, Heavey | 1895, 1900 | NY | SLIGO | 117 |
| 1459 | Anna | O'Hara | 1850 ? | NY | MAYO ? | 650 |
| 710 | Anna | Herron, O'Hara | PA ? | 254 |
| 467 | Anna | O'Hara | 1937 | IR | MAYO | 508 |
| 1235 | Anna | O'Hara | 1937-02-02 | IR | MAYO | 517 |
| 416 | Anna, Elizabeth | Pooley, Poole, O'Hara | PA, SD | 006, 113 |
| 2108 | Anna, Esther ?, Elizabeth ? | Miles, O'Hara | 1845-04-12; 1866-12-16; 1929-03-12 | KY, KS, IN | 881, 950, 956 |
| 2390 | Anna, G., Annie | O'Hara | 1846-11, 1847, 1848, 1870, 1880, 1890,1900 | LA | IRELAND | 1 0 2 4, 1 0 2 5, 1 0 2 7, 1 0 2 8, |
| 2147 | Anna, M. | O'Hara, Bolton | 1931-10-13 | NY | MAYO | 897 |
| 154 | Anna, Mae | O'Hara, Harmon | NY, NJ | 042, 374 |
| 2405 | Anna, Maison? | O'Harra | 1859?, 1860?, 1880+ | NY | 1 0 3 6, 1 0 3 8, |
| 1735 | Anna, May | O'Hara | 1878 | ON | 770 |
| 302 | Anna, Ordelia | O'Hara, Freeman | 1870-02-19, 1948-11-11 | WI, SD | 072 |
| 122 | Anna, Veronica | O'Hara, Rogers | 1875, 1904 | CO | 033 |
| 776 | Anne | O'Hara | IR ? | SLIGO | 334 |
| 1042 | Anne | Holohan, O'Hara | 1922-01-02 | CT, NY ? | 392, 616, 645 |
| 2322 | Anne | O'Hara | 1912, 1994 | MN | 981 |
| 812 | Anne | O'Hara, Cobb | IA, OH ? | 288 |
| 2361 | Anne | Walsh, Welsch, O'Hara | c. 1827 | PA | MAYO | 1 0 0 9, |
| 61 | Anne | O'Hara | NY | 015, 014 |
| 325 | Anne | O'Hara, O'Rourke | OH | 269 |
| 936 | Anne | O'Hara | 2001 | IR, EN ? | SLIGO, DUBLIN | 437 |
| 957 | Anne | O'Hara, McGurl | IR | LEITRIM | 795 |
| 498 | Anne | O'Hara | 1857 | IR | SLIGO | 654 |
| 501 | Anne | Caffrey, O'Hara | 1838, 1860 | IR | SLIGO | 654 |
| 1534 | Anne | O'Hara | 1790 | IR | IRELAND | 808, 809, 690 ? |
| 283 | Anne, Annie | O'Hara | 1868 | EN | 743, 744, 745, 760, 748, 817 |
| 1987 | Anne, Bullen | O'Hara, Eakin | IR, EN, AU ? | CORK ? | 829 |
| 2302 | Anne, M. | O'Hara, Vachon | 1886-01; 1962-07-12 | MN | 981 |
| 1284 | Annell | O'Hara | 1835 ?, 1881 | SL | IRELAND | 538, 539 |
| 1677 | Annestia | O'Hara | 1900-12-24 | NY | 751 |
| 1728 | Annie | Checkly ?, O'Hara | ON | 770 |
| 2581 | Annie | O'Hara | c.1870, 1880, | MD, IL | 1 1 0 6, |
| 542 | Annie | O'Hara, Lane | 1876, 1898, 1910 | ID | IRELAND | 162 |
| 2117 | Annie | Rogers, O'Hara | MA | ENGLAND ? | 887 |
| 377 | Annie | O'Hara, Black | 1871 | MS | 134 |
| 898 | Annie | O'Hara, Wiley | 1870, 1947 | US ? | 318 |
| 2739 | Annie | O'Hara | 1892-01 | MA | 1 1 9 6, 1 2 0 0, |
| 1982 | Annie | O'Hara, Greaves | 1881, 1888 | EN | 828 |
| 470 | Annie | O'Hara, Blair | 1872-05-16, 1892-06-06 | RI | MAYO | 142 |
| 1266 | Annie | O'Hara | 1824 ?, 1871 | EN | SLIGO | 811 |
| 2039 | Annie | O'Hara | CT ? | 838 |
| 2040 | Annie | Beck, O'Hara | CT | 836, 1 0 0 6, 1 0 4 4, |
| 1464 | Annie ? | O'Hara | 1847 ? | NY, OH | 657 |
| 2745 | Annie, Agnes | O'Hara, Meagher | IR, NY ? | SLIGO | 1 1 9 7, (117?) |
| 1955 | Annie, Emily | O'Hara, Harris | 1870, 1871 ?; 1891-02-08 ?; 1891-08-02 ? | EN | 812, 957 |
| 2399 | Annie, L. | O'Hara | 1880?, 1887, 1910+ | MA | IRELAND | 1 0 3 5, |
| 410 | Annie, T. | Crowley, O'Hara | MA | CORK | 109, 234 |
| 1480 | Anthony | O'Hara | PA ? | 659 |
| 1605 | Anthony | O'Hara | IR | MAYO | 708 |
| 96 | Anthony | O'Hara | 1845 | IR | MAYO | 024 |
| 2190 | Anthony | O'Hara | 1839, 1850 | NY, PA | MAYO | 936 |
| 407 | Anthony | O'Hara | IR | MAYO | 108 |
| 1215 | Anthony | O'Hara | 1846-08-17 | NY | 935, 1 2 3 6?, 1 2 3 7?, |
| 1727 | Anthony | O'Hara | 1865 | ON | 770 |
| 1476 | Anthony | O'Hora, O'Hara ? | 1870 | PA ? | MAYO | 659 |
| 1741 | Anthony | O'Hara | 1896 | ON | 770 |
| 983 | Anthony | O'Hara | 1812, 1837, 1840s, 1851 | ON | IRELAND | 766, 767, 769, 770 |
| 725 | Aramda, Frances | Soles, O'Harrah, O'Hara | 1850 | PA, FL ? | 241 |
| 1036 | Arch Deacon Roger | O'Hara | IR? | SLIGO | 378 |
| 1479 | Archbald | O'Hora, O'Hara ? | PA | 659 |
| 1485 | Archbald | O'Hora, O'Hara ? | PA | 659 |
| 1582 | Arthur | O'Hara | MA | 701, 704 |
| 2493 | Arthur | O'Hara | 1878?, 1880 | PA | 1 0 7 0, |
| 1409 | Arthur, Art | O'Hara | CA ? | 604 |
| 2215 | Attracta, Harriet | O'Hara | 1891, 1909+ | IR, US | SLIGO | 948 |
| 1831 | Audrey | Erwin, O'Hara | 786 |
| 484 | Austin | O'Hara | IR | SLIGO | 535, 653 |
| 773 | Austin (1) | O'Hara | IR | SLIGO | 332, 334 |
| 772 | Austin (2) | O'Hara | EN | SLIGO | 332, 333, 334 |
| 705 | Authur, Rodger | O'Hara | 1893-07-13- (30) | US | IRELAND | 231, 254, 256 |
| 127 | Barbara | O'Hara, McDermott | 033, 131 |
| 130 | Barbara | O'Hara, Halpin | 1880, 1881, 1910, 1916 | PA | IRELAND | 034, 044 |
| 143 | Barbara | Judge, O'Hara | 1840, 1854-03, 1860 | IR | MAYO | 477, 483, 484, 508, 509, 519, 520, 549, 584, 631, 792, 793 |
| 1160 | Barry | O'Hara | NB | 493, 929 |
| 5 | Benjamin | O'Hara | OH, IN | 081 |
| 1550 | Benjamin | O'Hara | 1924 | WA | 699 |
| 336 | Benjamin | O'Hara | IN | 081, 082, 083 |
| 1784 | Benjamin, F. | O'Hara | 1826, 1895 | NY | 784, 883, 901 |
| 1488 | Bernard | O'Hora, O'Hara ? | PA | 659 |
| 261 | Bernard | O'Hara | 1856 | AU | 057 |
| 1288 | Bernard | O'Hara | 1877, 1881 | SL | 538, 539 |
| 2079 | Bernard | O'Hara | NY | 894 |
| 37 | Bernard | O'Hara | 1839 | NY | DERRY | 011, 233, 111 |
| 1601 | Bernard | O'Hara | 1828 | EN ? | 707 |
| 841 | Bernard | O'Hara | ON, PA, NJ ? | 298, 305 |
| 848 | Bernard | O'Hara | 1845 | PA | 345 |
| 849 | Bernard | O'Hara | 1850 ? | NY | LEITRIM ? | 306 |
| 2201 | Bernard | O'Hara | 1866-09-14 | SL | 942 |
| 426 | Bernard | O'Hara | 1871 | ON | 198, 199, 925 |
| 2731 | Bernard | O'Hara | 1852, 1865+ | NS | IRELAND | 1 1 9 5, |
| 2734 | Bernard | O'Hara | 1850s, 1860s | NS | 1 1 9 5, |
| 1201 | Bernard | O'Hara | ME ? | 500 |
| 1211 | Bernard | O'Hara | 1828 | 761 |
| 2167 | Bernard (2) | O'Hara ? | ON, NS ? | 925 |
| 1576 | Bernard, A. | O'Hara | 1869-06-24; 1896-04-08; 1953-03-07 | MA | 701, 704, 717 |
| 1903 | Bernard, Barney | O'Hara | 1856-07; 1886-11-14 | NY | 804 |
| 1753 | Bernard, Rev. | O'Hara | 1814, 1838, 1866 | NH, NY | IRELAND, KILDARE | 782 |
| 1806 | Bernice | Allen, O'Hara | 786 |
| 1546 | Bertha | O'Hara, Boole | NB | 692 |
| 1040 | Bessie | O'Hara | NY, MA ? | 379, 393, 445, 995 |
| 2152 | Bessie | O'Hara, Meade | 1931 | NY ? | MAYO | 897 |
| 2047 | Bessie | O'Hara | CT ? | 836, 1 0 0 6, 1 0 4 4, |
| 982 | Betsy | O'Hara | WI ? | 365 |
| 1283 | Betty | O'Hara | SL | 532 |
| 1315 | Betty | O'Hara | 2001 | ON | 685, 684 |
| 1171 | Betty | O'Hara | KY | 495, 637 |
| 1842 | Beverly | DeSouza, O'Hara | 786 |
| 1233 | Bill | O'Hara | IL ? | 825 |
| 1530 | Bob | O'Hara | 402, 689 ??? |
| 2326 | Brian | O'Hara | 1918 | MN | 981 |
| 968 | Brian | O'Hara | 387 |
| 1448 | Bridget | O'Hara | IR, IA, MN ? | LIMERICK | 648 |
| 448 | Bridget | O'Hara, Gormley | 1915 | NY | 124 |
| 479 | Bridget | O'Hara | SLIGO | 143 |
| 2308 | Bridget | Jeffers, O'Hara | 1862, 1902+ | PA | 981 |
| 6 | Bridget | O'Hara | 1845 | US | CAVAN | 004 |
| 1814 | Bridget | O'Hara, Milner | 786 |
| 2586 | Bridget | O'Hara | c. 1835, 1880, | IL | IRELAND | 1 1 0 6, |
| 539 | Bridget | Larsen, O'Hara, Ohara | ME | IRELAND | 159 |
| 798 | Bridget | O'Hara, Ruloff | 1836-11, 1856, 1865 | WI, MI | IRELAND | 281 |
| 34 | Bridget | O'Hara, Culhane | 1856 | MI | IRELAND | 009 |
| 36 | Bridget | Cunningham, O'Hara | IRELAND | 009 |
| 2604 | Bridget | O'Hara | 1860, 1870, | IL | IRELAND | 1 1 0 5, |
| 58 | Bridget | O'Hara, Gormley | 1915 | 125 |
| 826 | Bridget | O'Hara, Goff | MI | MAYO | 297 |
| 2365 | Bridget | O'Hara | 1857 | PA | 1 0 0 9, |
| 2622 | Bridget | O'Hara | 1839, 1870, | IL | IRELAND | 1 1 0 4, |
| 319 | Bridget | O'Hara, Putman | 1864-02-02, 1896-06-10, 1938-12-19; 1939 ? | NY | MAYO | 476, 483 |
| 70 | Bridget | O'Hara | 1862 | NY | 016 |
| 1105 | Bridget | O'Hora, O'Hara | 1850, 1880 ? | NY | 436 |
| 1369 | Bridget | O'Hara | 1888 ? | MA | IRELAND | 588 |
| 97 | Bridget | O'Hara, Gould | WL | MAYO | 024, 331 |
| 1640 | Bridget | O'Hara | PA | 728, 724 |
| 106 | Bridget | O'Hara, McMahon | 1855 | ON, MI | 030, 229, 239 |
| 109 | Bridget | O'Hara, Tracey | 1850, 1908 | ON | 390 |
| 1136 | Bridget | Runian, O'Hara | IR, SL ? | LEITRIM ? | 454, 456 |
| 1648 | Bridget | O'Hara, Shea | IL | 768 |
| 117 | Bridget | O'Hara | 1859 | ON | 239 |
| 126 | Bridget | O'Hara, Welch | 033 |
| 384 | Bridget | Dermady, O'Hara | 1854 | ON | MAYO | 122 |
| 2433 | Bridget | O'Hara | 1844?, 1848?, 1849?, 1880+ | CT | IRELAND | 1 0 4 1, 1 0 4 2, |
| 648 | Bridget | O'Hara | 1859 | ON | 238 |
| 2440 | Bridget | Coats, O'Hara | 1849?, 1880+ | CT | IRELAND | 1 0 4 2, |
| 138 | Bridget | O'Hara, Gould | PA | 036 |
| 2443 | Bridget | O'Hara | 1871?, 1874-12?, 1877?, 1894, 1930+ | IL | 1 0 4 7, 1 0 4 8, 1 0 4 9, 1 0 5 0, |
| 2447 | Bridget | Costollo, Costello, O'Hara | 1897-07-11 | IL | 1 0 5 2, |
| 145 | Bridget | O'Hara | 1864-2-2, 1880, 1938 | PA, NY | MAYO | 477, 484, 508, 509, 520, 549, 584, 631, 792 |
| 413 | Bridget | Keaney, O'Hara | IR | LEITRIM | 109 |
| 1954 | Bridget | O'Hara, Driscoll | NY | 810 |
| 1444 | Bridget | Scanlan, O'Hara | 1804 ?; 1812-05-20 ?; 1823; 1847, 1892-01-02 | IR, IA, MN | LIMERICK | 648, 669 |
| 2470 | Bridget | O'Hara | 1813, 1850 | NY | IRELAND | 1 0 5 8, |
| 427 | Bridget | O'Hara | 1871, 1890 | ON, NS | 198, 199, 925 |
| 940 | Bridget | Moran, O'Hara | 1855, 1858 | EN, US | IRELAND | 341 |
| 1452 | Bridget | O'Hara | 1850 ? | NY | MAYO ? | 650 |
| 431 | Bridget | O'Hara | IR, MA ? | IRELAND ? | 118 |
| 959 | Bridget | Runian, O'Hara | 1865-03-05 | IR | LEITRIM | 383 |
| 706 | Bridget | Callahan ?, Callaghban ?, Callahan ?, O'Hara | 1815?, 1820s ?; 1843-05-29; 1870+ | QB?, ON, NY | MAYO, LEITRIM | 231, 254, 256, 1 0 7 1 ?, 1 0 7 2 ?, 1 0 7 4, 1 0 7 5, 1 0 7 6, 1 0 7 8, 1 0 8 2 ?, 1 0 8 3, 1 0 8 4, 1 0 9 3, 1 0 9 4, 1 0 9 6, 1 1 0 0, 1 1 0 2, 1 1 0 3, 1 1 2 1 ?, 1 1 2 2, 1 1 2 4, 1 1 3 1, 1 1 3 4, 1 1 3 7, 1 1 4 4 ?, |
| 974 | Bridget | Ryan, O'Hara | 1872 | AU | TIPPERARY | 360 |
| 1236 | Bridget | O'Hara | IR ? | MAYO | 517 |
| 469 | Bridget | McCormick, O'Hara | c. 1838, 1872, 1901 | IR, QB | MAYO | 142, 1 0 2 1, 1 0 8 1, |
| 2014 | Bridget | O'Hara | 1861?, 1944 | MA | IRELAND | 835 |
| 2278 | Bridget | O'Hara, Shannon | c. 1846 | IR | SLIGO | 987 |
| 487 | Bridget | O'Hara | IR | SLIGO ? | 535, 653 |
| 1000 | Bridget | O'Hara | c. 1827 | OH | 712 |
| 1002 | Bridget | O'Hara | 1876-09-11 | NY | 711 |
| 2286 | Bridget | O'Hara, Dolphin | 1828, 1844-1846 | PA | SLIGO | 981 |
| 242 | Bridget | O'Hara | ON | 228, 666 |
| 2034 | Bridget | O'Hara | CT ? | 836, 1 0 0 6, 1 0 4 4, |
| 499 | Bridget | O'Hara | 1860 | IR | SLIGO | 654 |
| 2496 | Bridget (2) | O'Hara | 1822,1825?, 1843-05-29; | QB, NY | LEITRIM | 1 0 7 1 ?, 1 0 7 2 ?, 1 0 7 4, 1 0 7 5, 1 0 7 6, 1 0 8 2 ?, 1 0 8 3, 1 0 8 4, 1 0 9 3, 1 0 9 4, 1 0 9 6, 1 1 0 0, 1 1 0 2, 1 1 0 3, 1 1 1 9, 1 1 2 1 ?, 1 1 2 2, 1 1 3 7, 1 1 4 4 ?, |
| 2288 | Bridget (3) | O'Hara | 1848 | PA | 981 |
| 825 | Bridget . | Cavanagh, Cavanaugh | 1818 | IR | MAYO | 297 |
| 2114 | Bridget, Agnes ? | Spellman, O'Hara | 1887, 1950s | PA | MAYO | 885, 889, 943 |
| 249 | Bridget, Brigitta | O'Connor, O'Hara | 1830s, 1843, 1855, 1858 | NY, WI | SLIGO | 053, 502, 510, 556, 935, 1 2 3 6, 1 2 4 5, |
| 460 | Bridget, Cecelia | Roche, O'Hara | 1841-05-10, 1858 | QB, NY | WEXFORD, ROSCOMMON | 138, 222 |
| 751 | Bridget, M. | Fitzpatrick, O'Hara | 1883 | OH | DUBLIN | 243 |
| 1337 | Bridget, Margaret ? | Scanlon, O'Hara | 1812-05-20; 1892-01-05 | IR, MN | LIMERICK | 574, 577, 735 |
| 1680 | Bridget, Rose | O'Hara, McMenomy, McManama | c. 1829; 1861-07-01; 1902-07-9 | IA | IRELAND | 753 |
| 2637 | Bridgett | O'Hara | 1850 | ON ?, MI ?, NY | LEITRIM, MAYO | 1 1 0 1, |
| 280 | Bridgit | Murray, O'Hara | 1870 | CA | 186, 187, 747 |
| 2732 | Bridgit | Hayden, O'Hara | 1852, 1865+ | NS | IRELAND | 1 1 9 5, |
| 2194 | Brigete | Linn, O'Hara | IR, SL | 942 |
| 669 | Brigid | McKenna, O'Hara | IR | TYRONE | 203, 207 |
| 833 | Brigote, Bridget | Dermady, O'Hara | 1865, 1875 | ON | 305 |
| 449 | Brigote, Bridget, Bridgett | Dermady, O'Hara | 1845, 1854 | IR, ON | MAYO | 128 |
| 2287 | Brine | O'Hara | 1834, 1879 | PA | SLIGO | 981 |
| 1820 | Bryan | O'Hara | 786 |
| 2606 | Bryan | O'Hara | 1869, 1870, | IL | 1 1 0 5, |
| 2296 | Bryan | O'Hara | 1858, 1902+ | PA | 981 |
| 1553 | C., C. | O'Hara | 1916, 1918, 1933 | WA | 860, 861, 863 |
| 2171 | Cahal | O'Hara | 1500s | IR | IRELAND | 928 |
| 857 | Calvin | O'Hara | 1850-12-31, 1875-03-13, 1921-09-29 | IN | 303, 944 |
| 1309 | Carmen | O'Hara | 2001 | ON | 684, 685 |
| 2735 | Caroline, Carrie | O'Hara | 1850s, 1860s, 1880+ | NS | 1 1 9 5, |
| 2168 | Carrie | O'Hara ? | NS, ON ? | 925 |
| 2720 | Carrie | O'Hara | 1850 ? | 1 1 8 9, |
| 1988 | Carrie | O'Hara | BC | 829 |
| 2618 | Cath | O'Hara | 1867, 1870, | IL | 1 1 0 4, |
| 293 | Cathall, Cahall, Charles | O'Hara | 1639 | IR | ANTRIM | 069 |
| 38 | Catharine | O'Hara, Tierney | NY | 011 |
| 40 | Catharine | McNamara, O'Hara | NY | 011, 233 |
| 1919 | Catharine, Agnes | O'Hara | 1874 | NY | 804 |
| 517 | Catherine | Welsh, O'Hara | 1866 | SL | IRELAND ? | 150 |
| 1466 | Catherine | O'Hara | 1851 ?, 1860 | NJ, OH | 657 |
| 714 | Catherine | O'Hara, McGuillan | MA ? | LEITRIM | 234, 109 |
| 1545 | Catherine | O'Hara | NB | 692 |
| 526 | Catherine | O'Hara, Foran | 1880, 1905, 1918 | NY | 154, 161 |
| 18 | Catherine | O'Hara | 1845 | US | CAVAN | 004 |
| 532 | Catherine | O'Hara, Moran | 1865 | 156 |
| 534 | Catherine | Brehany, O'Hara | 1760 ? | IR | SLIGO | 174 |
| 1566 | Catherine | O'Hara | MA | 701, 704 |
| 545 | Catherine | Dunivan, O'Hara | MN | 163 |
| 2593 | Catherine | O'Hara | 1821, 1870, | IL | IRELAND | 1 1 0 5, |
| 2603 | Catherine | O'Hara | 1858, 1870, | IL | IRELAND | 1 1 0 5, |
| 300 | Catherine | Brehany, O'Hara | IR? | SLIGO? | 130 |
| 2101 | Catherine | Cook, O'Hara | NY, CT ? | 880 |
| 312 | Catherine | O'Hara ? | 1816 | US | IRELAND | 641 |
| 2104 | Catherine | O'Hara, LaBonte | 1897, 1938 | CT | 880 |
| 1081 | Catherine | McAteer, O'Hara | 1869-12; 1908-03-13 | IR | ANTRIM | 423 |
| 1347 | Catherine | O'Hara | 1850? | NY | IRELAND | 581 |
| 69 | Catherine | O'Hara | 1859 | NY | 016 |
| 581 | Catherine | Connor | MA | IRELAND | 179 |
| 2119 | Catherine | Connolly, O'Hara | 1888; 1893-09-26 | MA | 887 |
| 2631 | Catherine | O'Hara | 1860 ?, | GA | 1 2 3 2, |
| 591 | Catherine | Healey, O'Hara | 1858, 1878 | PA | 184, 284 |
| 2129 | Catherine | O'Hara | PA | 889 |
| 2387 | Catherine | Paradis, O'Hara | c. 1882, 1901 | QB | 1 0 2 1, |
| 596 | Catherine | O'Hara, O'Hora | 1855 | PA | 184, 284 |
| 1884 | Catherine | O'Hara, McMullen | MD, PA | 870 |
| 1374 | Catherine | Dolan, O'Hara | 1879 | NY | SLIGO ? | 591 |
| 98 | Catherine | O'Hara, Rogan | MAYO | 024 |
| 363 | Catherine | O'Donnell, Dolan, O'Hara | 1893 | MA | IRELAND | 090 |
| 1387 | Catherine | O'Hara | IR, SL ? | ANTRIM | 592 |
| 892 | Catherine | O'Hara | 1851 ? | IR, SL | ANTRIM | 309 |
| 1405 | Catherine | O'Hara | EN | 602 |
| 2183 | Catherine | O'Hara | c. 1855 | NY | 932 |
| 137 | Catherine | O'Hara, Rogan | PA | 036 |
| 912 | Catherine | O'Hara, McCammon ? | 1932 | US | 324 |
| 149 | Catherine | McPadden, O'Hara | 1825, 1843, 1851, 1911 | NY | LEITRIM, SLIGO | 037, 804 |
| 414 | Catherine | O'Hara, Bier | 1826, 1849, 1857 | NY, LA, MS | 110 |
| 927 | Catherine | O'Hara | SL | 464 |
| 1188 | Catherine | O'Hara, Kerrigan | 1800, 1838 | IR, US ? | CAVAN | 498 |
| 2218 | Catherine | O'Hara | IR, US | SLIGO | 948 |
| 690 | Catherine | Crowley, O'Hara | ON, MI | 614 |
| 436 | Catherine | Canty, O'Hara | IR | LIMERICK | 236 |
| 948 | Catherine | O'Hara ? | 1816, 1840, 1842 | IR, PA | IRELAND | 337 |
| 1463 | Catherine | O'Hara | 1829 ?, 1860 | OH | IRELAND | 657 |
| 2487 | Catherine | O'Hara | 1868?, 1880, | PA | 1 0 7 0, |
| 2743 | Catherine | Conley, O'Hara | 1910-03-05; | MA | 1 1 9 9, |
| 1222 | Catherine | O'Hara | ON ? | ENGLAND ? | 516 |
| 2248 | Catherine | O'Hara | 1903, 1930+ | IL | 959, 1 0 4 7, 1 0 4 9, 1 0 5 0, |
| 465 | Catherine | O'Hara, Garrity | 1810, 1820, 1850, 1860 | OH | IRELAND | 140 |
| 985 | Catherine | O'Hara | 1837 | ON | IRELAND | 766, 767, 769, 770 |
| 1248 | Catherine | Daley, O'Hara | NJ | IRELAND | 593, 527, 594 |
| 1250 | Catherine | O'Hara | EN | 528, 764, 811 |
| 2279 | Catherine | O'Hara, Cleary | 1855 | SL | 989 |
| 490 | Catherine | O'Hara, Byrne | 1848-09-22 | IR | SLIGO | 535, 653 |
| 748 | Catherine | O'Hara | NY | 247, 242 |
| 1268 | Catherine | O'Hara | 1854 ?, 1871 | EN | 759, 811 |
| 757 | Catherine | McGuire, O'Hara | 1858, 1870 | KY, NJ, NY | IRELAND | 255 |
| 2044 | Catherine | Doherty, O'Hara | CT ? | 836, 1 0 0 6, 1 0 4 4, |
| 2046 | Catherine | O'Hara, Schultz | CT | 836, 1 0 0 6, 1 0 4 4, |
| 1731 | Catherine . | O'Hara, Inch | 1877 ? | ON, MN ? | 770 |
| 2338 | Catherine ? | O'Hara | SL | 994 |
| 559 | Catherine, Elizabeth ? | Horrigan, Hourigan, O'Hara | 1920 | NJ | 171, 182, 257 |
| 59 | Catherine, Elizabeth | O'Hara, Beatty | 1867?, 1937 | NY | CAVAN | 015, 014, 1 0 6 9, |
| 2004 | Catherine, F. | Connolly, O'Hara | c. 1900 | MA | 834, 1 1 9 3, |
| 1536 | Catherine, Isabella | O'Hara | c. 1844 | IR, AU | IRELAND | 808, 809, 690 ? |
| 164 | Catherine, Kate | O'Hara | c.1860, 1880 | NY | 374, 986, 1 0 6 1, |
| 144 | Catherine, Katherine | O'Hara | 1868-11-26, 1937-02 | IR | MAYO | 477, 484, 508, 509, 519, 520, 549, 584, 631, 792 |
| 2476 | Catherine, Katie | O'Hara | 1859, 1860, 1870 | NY | 1 0 5 9, 1 0 6 0, |
| 1053 | Cathie | O'Hara | 1922-07-15; 1923-07-04. 1924-07-04; 1925-06-24 | SL | SCOTLAND | 451 |
| 1472 | Cathleen | O'Hara ? | c. 1950 ? | EN | 658 |
| 259 | Cathy, Ann | O'Hara, Plint, Rattley | 1853 | AU | 057, 157 |
| 1951 | Cecilia | Brown, O'Hara | SL | 806 |
| 77 | Celia | Healey, Haley, O'Hara | 1880 | PA | 021 |
| 1112 | Celia | O'Hora, O'Hara | 1850, 1880 ? | NY | 436 |
| 128 | Celia | O'Hara, Connoly | NB | 033 |
| 2438 | Celia | O'Hara | 1874?, 1880+ | CT | 1 0 4 2, |
| 1458 | Celia | O'Hara | 1850 ? | NY | MAYO ? | 650 |
| 882 | Charles | O'Hara | 1790 ? | KY | IRELAND | 308 |
| 424 | Charles | O'Hara | 1872, 1954 | CN, NY | 115 |
| 7 | Charles | O'Hara | OH, IN | 081, 082 |
| 782 | Charles | O'Hara | 1810-11-03 | II | 274 |
| 1812 | Charles | O'Hara | 786 |
| 789 | Charles | O'Hara | 1947 | SL, AU, MA | LEITRIM | 280, 301 |
| 793 | Charles | O'Hara | IR | LEITRIM, SLIGO | 301 |
| 794 | Charles | O'Hara | 1880, 1909 | CN, IL, NE | SLIGO ? | 299, 349, 821 |
| 1056 | Charles | O'Hara | 1845 | IR ? | ANTRIM | 394, 612 |
| 2341 | Charles | O'Hara | NY, MA ? | 995 |
| 298 | Charles | O'Hara | 1730 | PA | IRELAND | 069 |
| 816 | Charles | O'Hara | 1854 | IR | ANTRIM | 290, 319 |
| 820 | Charles | O'Hara | 1832 | IR | ANTRIM | 296 |
| 1093 | Charles | O'Hara | 1856, 1874, 1922 | SL | ANTRIM | 430 |
| 2639 | Charles | O'Hara | 1850 ? | ON ?,MI ?, NY | LEITRIM, MAYO | 1 1 0 1, |
| 339 | Charles | O'Hara | 1854 | NY | IRELAND | 085 |
| 342 | Charles | O'Hara | 1872, 1954 | NY | 114 |
| 2398 | Charles | O'Hara | 1874?, 1910+ | NY, MA | 1 0 3 5, |
| 2655 | Charles | O'Hara | 1832-11-02; 1901+ | ON | 1 1 4 9, 1 1 5 0, |
| 2400 | Charles | O'Hara | 1907?, 1910+ | MA | 1 0 3 5, |
| 2410 | Charles | O'Harra | 1872?, 1880+ | NY | 1 0 3 6, |
| 623 | Charles | O'Hara | 1870 | NH, TX | IRELAND | 189 |
| 1135 | Charles | O'Hara | IR, SL ? | LEITRIM ? | 454, 456 |
| 1157 | Charles | O'Hara | NB | 493, 929 |
| 2452 | Charles | O'Hara | 1825 | SL | CAVAN | 1 0 5 7, |
| 409 | Charles | O'Hara | 1877, 1902, 1910 ? | MA | LEITRIM | 109, 234, 1 1 9 8 ?, |
| 2458 | Charles | O'Hara | 1863 | EN, AU | 1 0 5 7, |
| 1435 | Charles | O'Hara | 1902 | NY | LEITRIM | 629 |
| 2722 | Charles | O'Hara | 1 1 9 0, |
| 1193 | Charles | O'Hara | 1852, 1874 | SL | ANTRIM | 499, 714 |
| 179 | Charles | O'Hara | 1797 | IR | ANTRIM | 039 |
| 1972 | Charles | O'Hara | 1875, 1900 | MO | 821 |
| 2740 | Charles | O'Hara | 1877-03-02 | MA | IRELAND | 1 1 9 9, |
| 184 | Charles | O'Hara | 1823 | IR | ANTRIM | 271 |
| 185 | Charles | O'Hara | 1823 | IR | ANTRIM | 271 |
| 2237 | Charles | O'Hara | 1875 | 956 |
| 958 | Charles | O'Hara | 1865-03-05 | IR | LEITRIM | 383 |
| 960 | Charles | O'Hara | US ? | 383 |
| 2498 | Charles | O'Hara | 1846-7; 1846-08-23, 1860+ | NY | LEITRIM ? | 1 0 7 2, 1 0 8 2, 1 0 8 3, 1 0 9 3, 1 0 9 4, 1 0 9 6, 1 1 0 0, 1 1 2 1, 1 1 2 2, 1 1 2 6, |
| 1221 | Charles | O'Hara | ON ? | ENGLAND ? | 516 |
| 200 | Charles | O'Harrah | OH | 046 |
| 1230 | Charles | O'Hara | IL ? | 825 |
| 732 | Charles | O'Harrah | 1852 | PA ? | 354, 241 |
| 565 | Charles, C. | O'Hara | 1793 ?, 1850 | GA, KY | IRELAND | 175, 295 |
| 2714 | Charles, Edward, Sr. | O'Hara | 1850 ?, | 1 1 8 9, |
| 502 | Charles, Frances | O'Hara | 1809, 1814 | PA | SLIGO ? | 196 |
| 547 | Charles, Francis | O'Hara | 1809, 1811, 1814, 1885 | FL | TYRONE ? | 164, 209, 210, 211 |
| 1142 | Charles, Julius | O'Hara | 1880-05-16; 1908-11-18 | IL, CO | 461, 462, 465, 466, 471 |
| 1738 | Charles, Louis | O'Hara | 1889 | ON | 770 |
| 575 | Charles, Melsom | O'Hara | IL, PA ? | 178 |
| 1414 | Charles, Melsom | O'Hara | 1861, 1886 | MO, IL, PA | 605 |
| 2363 | Charles, Peter | O'Hara | 1853 | PA | 1 0 0 9, |
| 1920 | Charles, T. | O'Hara | 1876; 1950-04-17 | NY | 804 |
| 1156 | Charles, William | O'Hara | 1910-06-24; 2001-04-20 | NS, NB | 493, 929 |
| 726 | Charles, William | O'Hara | 1880 | FL ? | 241 |
| 1852 | Charlette | Fisher, O'Hara | PA ? | 794 |
| 2230 | Charlie | O'Hara | 2003 | VA ? | 954 |
| 976 | Charlie | O'Hara | 1871 | KY | 361 |
| 81 | Charlotte | O'Hara | PA | 021 |
| 2136 | Charlotte | Dibble, O'Hara | 1915, 1920, 1930 | NY, CT | 890, 980 |
| 601 | Charlotte | O'Hara, O'Hora | PA | 184 |
| 933 | Charlotte | McAnully, O'Hara | 357 |
| 2160 | Christine | Roach, O'Hara | 1900-08-08 | ON | 926 |
| 2689 | Christopher | O'Hara | 1 1 6 4, 1 1 6 8, |
| 1764 | Clara | O'Hara | NY | 783 |
| 1189 | Clara, Ann | O'Hara | 1901-11-06; 1975-07-06 | NE, IA | 496 |
| 1805 | Clarence, William | O'Hara | 786 |
| 1526 | Colin | O'Hara | 1980s | SL | 703 |
| 788 | Colleen | O'Hara | MB | 279, 818 |
| 1159 | Colleen | O'Hara | NB | 493, 929 |
| 996 | Colleen | O'Hara | CN | 506 |
| 999 | Colleen | O'Hara | 1973-08-12 | IL | 718 |
| 1638 | Collin ? | O'Hara | PA | 728, 724 |
| 2244 | Colonel, Walter | O'Hara | ON ? | 958 |
| 1224 | Constance, Josephine | O'Hara, Hibbert | 1869, 1871 | ON? | 516 |
| 2422 | Cora, B. | O'Harra | 1854?, 1860+ | NY | 1 0 3 8, |
| 2210 | Cordelia | O'Hara, Winslow | AL | (303), 944 |
| 1038 | Cormac | O'Hara | 1616 | IR | SLIGO | 378 |
| 296 | Cormac | O'Hara | 1600+ | IR | ANTRIM | 069 |
| 1299 | Cornelius | O'Hara, O'Hare ? | 1860 | AU | DOWN | 557 |
| 2532 | Corsmaci | O'Hara | 1833 | IR | SLIGO | 1 1 5 3, |
| 2085 | Cynthia | Cobb, O'Harra | c.1800 | NC, SC, AL | 855 |
| 1773 | Cynthia | Prindle, O'Hara | 1779-07-04; 1794-07-04; 1860-03-25 | VT, NY | 784, 882, 883, 889, 921, 1 1 1 4, |
| 1495 | Cyril, Michael | O'Hara | 1957, 1966 | PA | 659 |
| 63 | Daisy, Dais | O'Hara, Keenan | NY | 015, 014 |
| 1286 | Daniel | O'Hara | 1865 ?, 1881 | SL | 538, 539 |
| 472 | Daniel | O'Hara | 1855, 1864 | IR | SLIGO | 143 |
| 477 | Daniel | O'Hara | SLIGO | 143 |
| 1278 | Daniel | O'Hara | 1907 | SL | 532, 538, 539, 540 |
| 1281 | Daniel | O'Hara | SL | 532 |
| 32 | Daniel | O'Hara | 1839 | TN | 008 |
| 2088 | Daniel | O'Hara | 1845, 1870 | EN | 866 |
| 2610 | Daniel | O'Harra | 1862, 1870, | IL | IRELAND | 1 1 0 4, |
| 2371 | Daniel | O'Harra | 1 0 1 1, |
| 1883 | Daniel | O'Hara, O'Harra | MD, PA | 870 |
| 1382 | Daniel | O'Hara | IR, SL ? | ANTRIM | 592 |
| 887 | Daniel | O'Hara | 1851, 1860, 1880 ? | IR, SL, PA | ANTRIM | 309 |
| 666 | Daniel | O'Hara | 1863 ?, 1913-03-23 | PA | 202 |
| 2464 | Daniel | O'Hara | 1809?, 1814, 1819, 1870 | NY | IRELAND | 1 0 5 8, 1 0 5 9, 1 0 6 0, |
| 161 | Daniel | O'Hara, O'Harah | c. 1849, 1853?, 1880, 1888, 1891 | NY | 374, 986, 1 0 6 1, 1 0 6 2, |
| 2725 | Daniel | O'Hara | 1 1 9 0, |
| 689 | Daniel | O'Hara | 1834, 1860, 1888 | ON, MI | ARMAGH | 614 |
| 692 | Daniel | O'Hara | 1809 | PA | 221, 253, 429 |
| 1722 | Daniel | O'Hara | PA | 765 |
| 703 | Daniel | O'Hara | MD, PA | 227 |
| 1778 | Daniel | O'Hara | 1806 | NY | 784, 883, 901 |
| 2469 | Daniel (2) | O'Hara | 1848, 1849?, 1870 | NY | 1 0 5 8, 1 0 5 9, 1 0 6 0, |
| 1802 | Daniel, Benny, Murray | O'Hara | 786 |
| 156 | Daniel, Daniele | O'Hara | c.1819, 1842, 1874-11-07 | NY | IRELAND, GALWAY ? | 374, 986, 1 0 6 3, |
| 1013 | Daniel, Dano | O'Hara | 2004 | IR, NY ? | 369, 990 |
| 1816 | Danny | O'Hara | 786 |
| 2702 | Dano | O'Hara | 1952; 2004-11-12 | IR | TYRONE | 990, 1 1 8 8, 1 1 9 2, |
| 1875 | Darah | Wilkins, O'Hara | WI | 797, 798 |
| 1807 | David | O'Hara | 786 |
| 2337 | David | O'Hara | SL | 994 |
| 2641 | David | O'Hara | c.1837, 1892+ | NY | 1 1 3 2, |
| 2450 | David | Wilson, Pope, (O'Hara) | 1969 | NZ, AU | 1054 |
| 2224 | David | O'Hara | 1800?, 1821-1830, 1850 ? | CN, NY | 953, 1 1 3 2, |
| 2502 | David | O'Hara | 1856-04-09, 1870+ | NY | 1 0 7 2, 1 0 8 2, 1 0 8 4, 1 0 9 3, 1 0 9 4, 1 1 0 0, 1 1 2 1, 1 1 2 2, 1 1 2 3, 1 1 3 4, 1 0 4 6, |
| 2506 | David | O'Hara | MO | 1 0 7 2, 1 1 2 1, 1 1 2 2, 1 1 2 3, 1 1 3 4, |
| 1776 | David | O'Hara | 1801 | NY | 784, 883, 901 |
| 2670 | David, Michael | O'Hara | 2004+ | 1 1 4 3, |
| 462 | Dee ? | O'Hara, Jordon | MAYO | 138, 222 |
| 1366 | Delia | Bourke, O'Hara | EN | 583 |
| 685 | Delia, Bridget | O'Hara, Schlicksup, Stanton | 1851-07-29, 1869-12-15, 1918, 1922-03-01 | NY | ARMAGH | 214 |
| 2238 | Della, Delfina | O'Hara | 1878-09-01 | 956 |
| 2133 | Della, Mae | O'Hara | 1915-10, 1940s | NY, CT | 890 |
| 1242 | Denis | O'Hara | IR | SLIGO, MAYO | 518 |
| 316 | Dennis | O'Hara | 719 |
| 1264 | Dennis | O'Hara | 1857, 1881 | EN | 759, 764, 811 |
| 1596 | Dennis, H. | O'Hara | 1878-01-28; 1916-07-09 | MA | 701, 704 |
| 1747 | Dennis, James | O'Hara | 2002 ? | WA | 772, 773 |
| 1841 | Desmond | O'Hara | 786 |
| 1827 | Donald | O'Hara | 786 |
| 1865 | Donald | O'Hara | PA ? | 794 |
| 2705 | Donald | O'Hara | IR | TYRONE | 1 1 8 8, |
| 1710 | Donald | O'Hara | PA | 762 |
| 2249 | Donald | O'Hara | 1919, 1930+ | IL | 959, 1 0 4 7, |
| 1173 | Donald, aka, Johnny ? | O'Hara | KY | 495, 637 |
| 1005 | Donald, Daniel ? | O'Hara | 1915-04-04; 1977-11 | IR, NY, PA | CAVAN | 369, 990, 1 1 6 1, 1 2 0 7, |
| 1502 | Donald, John | O'Hara | 1961 | PA | 659 |
| 1868 | Donna | O'Hara | PA ? | 794 |
| 1870 | Donna | Coleman, O'Hara | PA ? | 794 |
| 1713 | Donna | O'Hara | PA | 762 |
| 1529 | Dorothea, Marie, Christine | Nielson, O'Hara | US ? | CONTINENT, DENMARK | 680 |
| 1815 | Dorothy | Perkins, O'Hara | 786 |
| 1312 | Dorothy | O'Hara | ON | 684 |
| 1953 | Dorothy, Elizabeth | Coffman, O'Hara | 1912; 1959-06 | CA | 807, 1 0 0 4, |
| 616 | E., Florence | O'Hara | MA | 188 |
| 9 | Ed | O'Hara | 1863-12-07 | US | ANTRIM | 316, 843, 845 |
| 1517 | Ed | O'Hara | 1888 | MN | 668 |
| 2444 | Edd | O'Hara | 1875-08; 1900+ | IL | IRELAND | 1 0 4 8, |
| 1047 | Eddie (1) | O'Hara | 1922-07-15 | SL | SCOTLAND | 386, 451 |
| 1048 | Eddie (2) | O'Hara | 1918, 1922-07-15; 1923-07-04. 1924-07-04; 1925-06-24 | SL | SCOTLAND | 386, 451 |
| 2048 | Edith | O'Hara, Fitzpatrick | CT | 836, 1 0 0 6, 1 0 4 4, |
| 730 | Edith V. | O'Hara, Allen, Heslin | FL, CT ? | 241 |
| 349 | Edmond | O'Hara, Hara | IR | KERRY | 088 |
| 1446 | Edmund | O'Hara | IR, IA, MN ? | LIMERICK | 648 |
| 1595 | Edmund | O'Hara | MA | 701, 704 |
| 1214 | Edmund | Hara | 1823, 1852, 1901 ? | IR | KERRY | 613 |
| 1575 | Edna | O'Hara | MA | 701, 704 |
| 2653 | Edna | O'Hara | 1881-10-23; 1901 | ON | 1 1 4 9, 1 1 5 0 |
| 277 | Edna, Marie | O'Hara, Whitney | 1898-02-21 | PA | 061 |
| 1482 | Edward | O'Hora, O'Hara | PA ? | 659 |
| 1 | Edward | O'Hara | PA, OH, IN | IRELAND | 001 |
| 516 | Edward | O'Hara | 1866 | SL | IRELAND ? | 150 |
| 1540 | Edward | O'Hara, O'Harah | 1815, 1816 | PA | 691 |
| 2062 | Edward | O'Hara | 1916 | 842, 844, 845 |
| 2349 | Edward | O'Hara | 1909-05-11; 1989-05-27 | PA | 983 |
| 2617 | Edward | O'Hara | 1864, 1870, | IL | 1 1 0 4, |
| 570 | Edward | O'Hara | 1900 | US | SCOTLAND | 176, 177 |
| 2634 | Edward | O'Hara | WI | 1 2 4 5, |
| 334 | Edward | O'Hara | IN | 083 |
| 335 | Edward | O'Hara | OH, IN | 083 |
| 863 | Edward | O'Hara | IN | 303 |
| 354 | Edward | O'Hara | MA, IL | 089 |
| 2419 | Edward | O'Harra | 1867?, 1870 | NY | 1 0 3 7, |
| 2203 | Edward | O'Hara | 1869-09-04 | SL | 942 |
| 676 | Edward | O'Hara | MA ?, IL | 208 |
| 1704 | Edward | O'Hara | PA | 762 |
| 1706 | Edward | O'Hara | PA | 762 |
| 1206 | Edward | O'Hara | 1858 ? | WI | 502 |
| 1216 | Edward | O'Hara | 1843 | NY, WI | 566 |
| 2255 | Edward | O'Hara | 1889 | NY | 961 |
| 2512 | Edward | O'Hara | 1878?, 1880 | MO | 1 0 8 5, 1 0 8 6, |
| 2260 | Edward | O'Hara | 1848 | CN | IRELAND | 968 |
| 1511 | Edward | O'Hara | 1798, 1800 | PA, OH, IN | IRELAND | 664, 1 1 6 0, |
| 250 | Edward | O'Hara | 1843, 1855, 1895 | NY, WI | 053, 510 |
| 1857 | Edward Jr. | O'Hara | PA ? | 794 |
| 1853 | Edward Sr. | O'Hara | PA ? | 794 |
| 1147 | Edward, Alonzo | O'Hara | 1930s | NB | 473, 970 |
| 1623 | Edward, Anthony | O'Hara | 1933, 1934 | NY | 708 |
| 993 | Edward, Augustine, Gus | O'Hara | 1881 | ON ?, WI | 769, 770 |
| 1611 | Edward, Ed | O'Hara | 1920s, 1930s | NY | MAYO | 708 |
| 1357 | Edward, F. | O'Hara | WI | 598, 600 |
| 417 | Edward, Fiske | O'Hara | 1890 | SD | 006, 113 |
| 1589 | Edward, G. | O'Hara | 1873-12-20; 1957-07-01 | MA | 701, 704 |
| 1020 | Edward, G. | O'Hara | 1839 | IR | IRELAND | 371 |
| 515 | Edward, Henry | O'Hara | 1866-07-01, 1914, 1917 | SL | 150, 180 |
| 511 | Edward, J. | Fox, O'Hara | PA | 146 |
| 615 | Edward, Julian | O'Hara | 1874-07, 1907-01-15 | MA | 188 |
| 1179 | Edward, Wallace | O'Hara | 1877-02-13; 1897-09-15; 1915 | NE | 496 |
| 561 | Edwin | O'Hara | 1900 | OK | 172, 173 |
| 2409 | Edwin | O'Harra | 1868?, 1880+ | NY | 1 0 3 6, |
| 2325 | Eileen | O'Hara | 1916 | MN ? | 981 |
| 1836 | Eileen | O'Hara | 786 |
| 2127 | Eileen | O'Hara | PA | 889 |
| 124 | Eleanor | Burke, O'Hara | 033 |
| 178 | Eleanor | Dunn, O'Hara | 1792 | IR | ANTRIM | 039 |
| 1490 | Eleanor | O'Hora, O'Hara | PA | 659 |
| 571 | Elenora | O'Hara | US | 176, 177 |
| 630 | Elexious, Queen | O'Hara | NY | IRELAND | 190 |
| 1139 | Elinor | Hawkins, O'Harrow, O'Hair | KY ? | 458 |
| 1059 | Elisa | O'Hara | 1845+ | IR | ANTRIM | 394, 612 |
| 2656 | Eliza | Blakely, O'Hara | 1883, 1919 | ON ? | 1 1 4 2, |
| 1760 | Eliza | O'Hara | NY | 783, 877 ? |
| 1419 | Eliza, Daisey | Safford, O'Hara | 1861, 1864 | AR, TN | 605 |
| 2211 | Eliza, Lizzie | O'Harra, O'Hara, Jackson | 1850, 1871, 1872, 1873, 1878 | OH, ON, MI | IRELAND | 945, 946, 367? |
| 739 | Elizabeth | O'Hara | US ? | 304 |
| 1543 | Elizabeth | O'Hara | 1842 | NB | 692 |
| 781 | Elizabeth | O'Hara | 1810-11-03 | II | 274 |
| 2584 | Elizabeth | O'Hara | c. 1875, 1880, | MD, IL | 1 1 0 6, |
| 28 | Elizabeth | O'Hara, Thompson | 1886 | ND, SK, QB | 617, 620, 630 |
| 805 | Elizabeth | O'Hara | 1863 | ON, SK ? | 282, 287 |
| 811 | Elizabeth | Slevin, O'Hara | 1843 | IA, OH | 288 |
| 1580 | Elizabeth | O'Hara | MA | 701, 704 |
| 2132 | Elizabeth | O'Hara | PA | 889 |
| 1879 | Elizabeth | Threlfall, O'Hara | IL | 869 |
| 351 | Elizabeth | Kern, O'Hara | 1875, 1899 | MA, IL | 089 |
| 1888 | Elizabeth | Carroll, O'Hara | c. 1890, 1960 | PA | 799 |
| 356 | Elizabeth | O'Hara | 1899-10 | IL | 089 |
| 1894 | Elizabeth | O'Hara, Casey | PA | 799 |
| 871 | Elizabeth | Graham, O'Hara | 1930 | WA | 673 |
| 622 | Elizabeth | Leife, O'Hara | MA | 188 |
| 1140 | Elizabeth | Tribett, O'Harrow, O'Hair | 1793-04-04 | VA, KY | 458 |
| 1916 | Elizabeth | Collins, O'Hara | 1886; 1960-11-10 | NY | 804 |
| 646 | Elizabeth | Nash, O'Hara | 1886 | ON | CORK ? | 238, 272, 663 |
| 909 | Elizabeth | Prendergast, O'Hara | 1919, 1934 | US | 324 |
| 1425 | Elizabeth | O'Hara, Dodds | ON | 607, 752 |
| 1170 | Elizabeth | Weigand, O'Hara | OH, KY | 495, 637 |
| 662 | Elizabeth | Shouldice, O'Hara | ON | 662, 663 |
| 922 | Elizabeth | Prendergast, O'Hara | US ? | 779 |
| 672 | Elizabeth | Kern, O'Hara | 1875 | MA ?, IL | 208 |
| 171 | Elizabeth | O'Hara, Wheeler | OH, WI, IA | 038 |
| 1964 | Elizabeth | Jordan, O'Hara | IR ? | 819 |
| 176 | Elizabeth | O'Hara, Still | 1875, 1910-10-26 | OH | 102 |
| 195 | Elizabeth | O'Harrah | 1860-08-08 | OH | 046 |
| 453 | Elizabeth | Rochford, O'Hara | 1935 | OH | 126, 262 |
| 1990 | Elizabeth | Price, O'Hara | PA ? | 830 |
| 456 | Elizabeth | O'Hara, Kramer | 1896-01-07, 1967-09-25 | OH | 262 |
| 2264 | Elizabeth | Anderson, Judge, O'Hara ? | 1845 | AU | 974, 975 |
| 2017 | Elizabeth | O'Hara | 1865, 1953 | NY | IRELAND ? | 835 |
| 784 | Elizabeth (2) | O'Hara | 1815-02-15, 1815-02-25 | II | 274 |
| 1549 | Elizabeth, A. | Morehead, O'Hara | 1883-09-19 | IN, WA ? | 699 |
| 1675 | Elizabeth, Agnes | O'Hara, Goodman | 1875, 1898 | GA, IR | 858, 859, 904, 907, 908 |
| 2461 | Elizabeth, Ann | O'Hara | 1870 | AU | 1 0 5 7, |
| 2425 | Elizabeth, Betsey | O'Hara | 1838, 1839?, 1860+ | CT | IRELAND | 1 0 3 9, 1 0 4 0, |
| 2025 | Elizabeth, Betsey | O'Hara, Enright | 1838, 1841, 1918 | CT, MA | 836, 1 0 0 6, 1 0 4 3, 1 0 4 4, |
| 2384 | Elizabeth, Betty | O'Hara, Lister | 1900, 1922 | PA | 1 0 1 7, 1 0 1 8, |
| 707 | Elizabeth, Helen | O'Hara, Mayer | 256 |
| 2505 | Elizabeth, Lizzie | Miehe, O'Hara | MO | 1 0 7 2, 1 0 8 7, 1 0 9 7, 1 0 9 9, |
| 1769 | Elizabeth, Lizzie | O'Hara | 1901 | IL, NY | 877, 783 ? |
| 1673 | Elizabeth, M. | Vernon, O'Hara | 1873, 1875, 1898 | GA | 858, 859, 904, 907, 908, 913, 920 |
| 708 | Elizabeth, Marie | O'Hara | 1904, 1959 | PA | 254 |
| 874 | Ella | O'Hara, Richardson | 1921-07-30 | ON | 307 |
| 1959 | Ella | Goffe, O'Hara | 1904 | MB | EN | 279, 818 |
| 46 | Ella Agnes | Murphy, O'Hara | NY | 220 |
| 971 | Ella, Agnes | Murphy, O'Hara | IA | 358 |
| 265 | Ellen | O'Hara | 1864 | AU | 057 |
| 2579 | Ellen | O'Hara | c.1864, 1880 | MD, IL, | 1 1 0 6, |
| 533 | Ellen | O'Hara | 1870 | 156 |
| 806 | Ellen | O'Hara | 1864 | ON, SK ? | 282, 287 |
| 1833 | Ellen | Murray, O'Hara | 786 |
| 2602 | Ellen | O'Hara | 1857 | IL | IRELAND | 1 1 0 5, |
| 2613 | Ellen | O'Hara | 1829, 1870, | IL | IRELAND | 1 1 0 5, |
| 2115 | Ellen | O'Hara, Carr | 1805; 1895-01-27 | IR | SLIGO, DONEGAL | 886 |
| 2629 | Ellen | O'Hara | 1860 ? | GA | 1 2 3 2, |
| 2395 | Ellen | O'Hara | 1881-03 | ON | 1 0 3 1 |
| 348 | Ellen | Flynn, O'Hara, Hara | 1826 | IR | KERRY | 088 |
| 1381 | Ellen | O'Hara, McCormick | 1830?, 1871 | IR, SL, PA | ANTRIM | 592 |
| 108 | Ellen | O'Hara, Going | ON | 390 |
| 111 | Ellen | O'Hara | 1844 | ON | 239 |
| 2418 | Ellen | O'Harra | 1865?, 1870+ | NY | 1 0 3 7, |
| 1397 | Ellen | O'Hara, Law | 1917-08-14; 1919 | EN | 601 |
| 886 | Ellen | O'Hara, McCormick | 1851, 1880 | IR, SL, PA | ANTRIM | 309 |
| 1403 | Ellen | O'Hara | EN | 602 |
| 641 | Ellen | O'Hara | 1844 | ON | 238 |
| 660 | Ellen | O'Hara, Going | ON | 504, 505, 663 |
| 160 | Ellen | O'Hara | c. 1844 | NY | IRELAND | 374, 986 |
| 2468 | Ellen | O'Hara | 1844, 1845?, 1860 | NY | IRELAND | 1 0 5 8, 1 0 5 9, |
| 1197 | Ellen | O'Hara | 1880, 1900, 1910, 1920 | IA, UT, WY | 599 |
| 944 | Ellen | Mooney, O'Hara, Wilson | 1859 | MO | 335 |
| 2490 | Ellen | O'Hara | 1872?, 1880 | PA | 1 0 7 0, |
| 980 | Ellen | O'Hare, O'Hara | 1860, 1865 | MA | IRELAND | 364 |
| 981 | Ellen | O'Hara, O'Hearn, Faltersack | 1869, 1897-02-26 | WI, MI | 365, 771 |
| 988 | Ellen | O'Hara | 1846 | ON | IRELAND | 766, 767, 769, 770 |
| 736 | Ellen | Murphy, O'Hara | US ? | CORK | 304 |
| 2016 | Ellen | Leary, Toohey, O'Hara | 1865, 1919 | NY, PA | IRELAND ? | 835 |
| 1252 | Ellen | O'Hara | EN | 528, 764, 811 |
| 488 | Ellen | O'Hara | IR | SLIGO ? | 535, 653 |
| 2283 | Ellen | O'Hara | 1826, 1850 | PA | SLIGO ? | 981 |
| 236 | Ellen | O'Hara, Going | 1843 | ON | 228, 389, 666 |
| 1277 | Ellen | O'Hara | PA | 530 |
| 1352 | Ellen ? | O'Hara | 1855-03 | WI | 598, 600 |
| 1577 | Ellen, E. | Ripley, O'Hara | 1896-04-08 | MA | 701, 704, 717 |
| 821 | Ellen, Elizabeth ? | O'Hara | 1832 | IR | ANTRIM | 296 |
| 541 | Ellen, J. | Ryan, O'Hara, Ohara | 1894-10-23 | ME | 159 |
| 2460 | Ellen, Jane | O'Hara | 1868 | AU | 1 0 5 7, |
| 1908 | Ellen, Nellie | O'Hara, McLaughlin | 1867-01; 1889-06-29 | NY | 804 |
| 256 | Ellen, Tone | O'Hara, Hyland | 1860, 1865 | GA | 056 |
| 629 | Elmer | O'Hara | NH ? | 189 |
| 208 | Elmer | O'Harrah | OH | 046 |
| 1143 | Elsie, Imogene | Hyatt, O'Hara | 1881-03-07; 1965-04-06 | NE, CA | 471 |
| 795 | Elsie, Imogine | Hyatt, O'Hara | 1905 | NE | 299, 821 |
| 963 | Elsie, Imogine | Hyatt, O'Hara | 1905 | NE | 349 |
| 203 | Elva, Myrtle | O'Harrah | OH | 046 |
| 50 | Emeline | O'Hara | 1850 | NY | 107 |
| 367 | Emily | Lyle, O'Hara | 1884 | IR | ANTRIM | 093 |
| 2430 | Emily | O'Hara | 1853, 1857?, 1880+ | CT | 1 0 4 0, 1 0 4 1, 1 0 4 2, |
| 2033 | Emily (1) | O'Hara | 1841, 1847? | IR | IRELAND | 836, 1 0 0 6, 1 0 4 4, |
| 2032 | Emily (2) | O'Hara, Kennedy | 1853 | CT, NY | 836, 1 0 0 6, 1 0 4 4, |
| 1183 | Emily, Marguerite | O'Hara | 1903-06-06; 1987-08-13 | NE, IA | 496 |
| 577 | Emma | O'Hara | IL, PA ? | 178 |
| 1113 | Emma | O'Hora, O'Hara | 1850, 1880 ? | NY | 436 |
| 1416 | Emma | O'Hara | 1840s | MO, IL | 605 |
| 946 | Emma | O'Hara, Wilson | MO | 335 |
| 1801 | Emma, Dolly | O'Hara, Crook | 786 |
| 1797 | Emma, Jesson | Murray, O'Hara | 786 |
| 1460 | Emma. | O'Hara | 1850 ? | NY | MAYO ? | 650 |
| 313 | Emmett | O'Hara | 1902 ? | PA ? | 181, 719 |
| 613 | Emmett | O'Hara | PA | 185 |
| 1320 | Emmylou | Edwards, O'Hara | 1880-05-04 | TX | 561 |
| 1835 | Ena | O'Hara, Bewley | 786 |
| 1810 | Eric | O'Hara | 786 |
| 1943 | Erin, Jeanette | O'Hara, Daily ? | 1981-07-21; 2003+ | NY | 804 |
| 1734 | Ernest | O'Hara | 1877 | ON | 770 |
| 1092 | Estella | Carnero, O'Hara | TX | 425 |
| 1153 | Esther | O'Hara, Wyckoff | 1809; 1830; 1831-08-31 | NY | 482 |
| 830 | Esther, Raymond | Kelly, O'Hara | PA | 302 |
| 201 | Estol, James | O'Harrah | OH | 046 |
| 2320 | Ethel | McDonough, O'Hara | 1890 | MN | 981 |
| 2240 | Etta | O'Hara, Goetsche | 1885-11-02; 1905 | 956 |
| 2270 | Eudora | O'Hara, Wilson | 1861-07-29; 1877-12-25; 1891-10-28 | IA ? | 979 |
| 78 | Eugene | O'Hara | 1890, 1900 | PA, MI | 021, 064, 169 |
| 598 | Eugene | O'Hara, O'Hora | PA | 184 |
| 2682 | Eugene, D. | O'Hara | c.1923, 1930+ | MO | 1 1 5 1, 1 1 5 7, |
| 84 | Eugene, R. | O'Hara | 1941 | PA | 062 |
| 101 | Eugene, R. | O'Hara | PA | 063 |
| 2165 | Eunice, U. | Walden, O'Harra | 1857-02-01 | OR | 924, 1 0 1 1, |
| 2414 | Eva | O'Harra | 1854?, 1870+ | NY | 1 0 3 7, |
| 656 | Eva | O'Hara | 1890 | ON | 238 |
| 202 | Eva | O'Harrah | OH | 046 |
| 1934 | Evelyn | Johnson, O'Hara | 1917-10-23; 1947-07-05; 1990-07-31 | NY | 804 |
| 2375 | Evelyn | O'Hara | OR | 1 0 1 4, |
| 2480 | Evelyn | O'Hara | 1905, 1930 | OH | 1 0 6 4, |
| 1944 | Evelyn, Mary, Shannon | O'Hara | 2000-06-13; 2003+ | NY | 804 |
| 1999 | F. | O'Hara, Paquin | 1928 | NY | 833 |
| 2000 | F. | O'Hara, Hutchingson | 1928 | NY | 833 |
| 2721 | Fannie | O'Hara | 1 1 9 0, |
| 814 | Fannie, Frances, Alice | O'Hara | IA, OH ? | 288 |
| 1035 | Father Denis | O'Hara | IR? | SLIGO | 378 |
| 1905 | Felix | O'Hara | 1861-06-10; 1904-11-07 | NY | 804 |
| 2691 | Felix | O'Hara | 1884 ?, 1920+ | PA | 1 1 6 7, |
| 148 | Felix | O'Hara | 1821, 1843, 1851, 1877 | NY | LEITRIM, SLIGO | 037, 804, 1 1 1 9, |
| 2684 | Felix, Bernard | O'Hara | 1922 | II | 1 1 6 4, 1 1 6 8, |
| 2312 | Felix, Bryan | O'Hara | 1892 | PA ? | 981 |
| 2280 | Felix, Joseph (1) | O'Hara | 1794-03-18 | IR, PA | SLIGO | 981 |
| 2285 | Felix, Joseph (2) | O'Hara | 1826-09-03; 1848-12; 1886-06-11 | PA | SLIGO | 981 |
| 2295 | Felix, Joseph (3) | O'Hara | 1856, 1924 | PA, MN | 105, 981 |
| 923 | Fiske ? | Fiske, O'Hara, ohara ? | 1900, 1947 | 326 |
| 2257 | Florence | O'Hara | 1894 | NY | 961 |
| 2045 | Florence | O'Hara, Quin | CT ? | 836, 1 0 0 6, 1 0 4 4, |
| 2406 | Florince, Florence | O'Harra | 1861?, 1880+ | NY | 1 0 3 6, 1 0 3 7, |
| 2269 | Florinda, Flora, Ann | O'Hara, O'Harra, Swift | 1857-03-11; 1875-03-11; <1880 | IA | 979, 1 1 8 5, |
| 1567 | Frances | O'Hara | MA | 701, 704 |
| 2415 | Frances | O'Harra | 1855?, 1870+ | NY | 1 0 3 7, 1 0 3 8, |
| 2537 | Frances | O'Hara | c.1860 | IL | 1 0 8 8, 1 0 9 1, |
| 1522 | Frances | O'Hara | 1938 ? | TX | 670 |
| 1076 | Frances, Drusilla | Siegertz, O'Hara | AS | 420 |
| 1181 | Frances, Eugenia | O'Hara | 1915-10-27; 1986-07 | NE, IA | 496 |
| 1429 | Frances, Ophelia | O'Hara, Watson | 1806-07-04, 1847-06-28 | GA | 619, 621, 698 |
| 52 | Francis | O'Hara | 1850 | NY | 107 |
| 2055 | Francis | O'Hara | 1872 | MD | IRELAND | 837 |
| 2580 | Francis | O'Hara | c. 1868, 1880, | MD, IL | 1 1 0 6, |
| 1561 | Francis | O'Hara | MA ? | 701, 704 |
| 2344 | Francis | O'Hara | 1900-08-22; 1983-07 | PA | 983 |
| 1581 | Francis | O'Hara | MA | 701, 704 |
| 1593 | Francis | O'Hara | MA | 701, 704 |
| 1851 | Francis | O'Hara | PA ? | 794 |
| 2624 | Francis | O'Hara | 1858, 1870, | IL | 1 1 0 4, |
| 82 | Francis | O'Hara | PA | 021 |
| 2646 | Francis | Synder, O'Hara | 1 1 4 0, |
| 602 | Francis | O'Hara, O'Hora | PA | 184 |
| 1127 | Francis | O'Hara | NY | 452 |
| 1654 | Francis | O'Hara | IL | 768 |
| 956 | Francis | O'Hara | 1928 | MA | LEITRIM | 795 |
| 712 | Francis | O'Hara | MA ? | LEITRIM | 234, 109 |
| 2521 | Francis | O'Hara | 1851, 1860+ | NY | 1 0 8 2, |
| 1019 | Francis | Harrigan?, O'Hara | NS ? | 371 |
| 1862 | Francis Sr. | O'Hara | PA ? | 794 |
| 1244 | Francis, John | O'Hara | 1901, 1917 | NJ, NY, PA | CORK ? | 527, 593, 594 |
| 2501 | Francis, Frank | O'Hara | 1853-07-28, 1870+ | NY | 1 0 7 2, 1 0 8 2, 1 0 8 4, 1 0 9 3, 1 0 9 4, 1 1 0 0, 1 1 2 1, 1 1 2 2, 1 1 2 5, 1 1 3 0, |
| 397 | Francis, Joseph | O'Hara | 1880, 1900 | MO, TX, CA | CORK ? | 106 |
| 411 | Francis, Nicholas | O'Hara | MA | 109, 234 |
| 438 | Francis, P. | O'Hara | 1884 | MO | 121 |
| 400 | Francis, Paul | O'Hara | MO, TX, CA | 106 |
| 1184 | Francis, William | O'Hara | 1898-06-14; 1973-12-14 | NE, IA | 496 |
| 770 | Frank | O'Hara, O'Hayer ? | IL ? | 266, 632 |
| 1293 | Frank | O'Hara, O'Harah | 1800+ | PA | 541 |
| 271 | Frank | O'Hara | US | 059 |
| 2403 | Frank | O'Harra | 1857?, 1880+ | NY | 1 0 3 6, |
| 624 | Frank | O'Hara | NH ? | IRELAND | 189 |
| 131 | Frank | O'Hara | PA | 034 |
| 1707 | Frank | O'Hara | PA | 762 |
| 1759 | Frank | O'Hara | NY | 783 |
| 1531 | Frank | O'Hara | 402, 689 ??? |
| 509 | Frank | O'Hara | IR ? | MAYO | 146 |
| 2648 | Frank, E. | O'Hara | 1 1 4 0, |
| 2659 | Franklin | O'Hara | 1858-10-04; 1901+ | ON | 1 1 4 9, |
| 1334 | Fred | O'Hara | EN | ENGLAND | 573 |
| 627 | Fred | O'Hara | NH ? | 189 |
| 2041 | Freddy | O'Hara | CT ? | 836, 1 0 0 6, 1 0 4 4, |
| 1569 | Frederick | O'Hara | MA | 701, 704 |
| 1406 | Frederick | O'Hara | EN | 602 |
| 1251 | Frederick | O'Hara | EN | 528, 764, 811 |
| 2710 | Gabby | O'Hara | 2004+ | IR ? | TYRONE | 1 1 8 8, |
| 1009 | Gabriel | O'Hara | NY ? | 369 |
| 221 | Gardner | O'Hara, Harrey | 1833, 1898 | NY | IRELAND | 716 |
| 2236 | Garnet, Elizabeth | Grady, O'Hara | 1896 | 956 |
| 1724 | Gary | O'Hara | PA | 765 |
| 1980 | General, Charles | O'Hara | 1740?, 1802 | EN | 826, 872 |
| 1598 | Genevieve | O'Hara, O'Harra, Brandabur | OH | 705, 722, 733, 739, 854 |
| 1744 | George | O'Hara | WA | IRELAND ? | 772, 773 |
| 35 | George | O'Hara | IRELAND | 009 |
| 521 | George | O'Hara | 1867, 1886-10-29 | SL | IRELAND | 625 |
| 29 | George | O'Hara | 1838, 1902-05-02 | ND | 084 |
| 1565 | George | O'Hara | MA | 701, 704 |
| 303 | George | O'Hara | WI | 072 |
| 2373 | George | O'Hara | 1888-09-17, 1917, 1918 | OR | 1 0 1 4, |
| 104 | George | O'Hara | NY | 026 |
| 113 | George | O'Hara | 1849 | ON | 239 |
| 657 | George | O'Hara | 1890 | ON | 238 |
| 915 | George | O'Hara | US | 324 |
| 663 | George | O'Hara | ON | 662 |
| 2478 | George | O'Hara | 1865, 1930 | OH | 1 0 6 4, |
| 205 | George | O'Harrah | OH | 046 |
| 2258 | George | O'Hara | 1897 | NY | 961 |
| 1001 | George | O'Hara | c. 1830 | OH | 712 |
| 240 | George | O'Hara | ON | 228, 666 |
| 729 | George, D. | O'Hara | 1890 | FL ? | 241 |
| 2377 | George, Dennis | O'Hara | 1 0 1 4, |
| 1190 | George, Dennis | O'Hara | 1908-11-21; 1985-10-03 | NE, CA | 496 |
| 1931 | George, E. | O'Hara | 1912-09-16; 1962-07 | NY | 804 |
| 216 | George, Elza, Eldon | O'Harrah | OH | 046, 054 |
| 1915 | George, F. | O'Hara | 1886; 1944-06-29 | NY | 804 |
| 1356 | George, H. | O'Hara | WI ? | 598, 600 |
| 1587 | George, Henry | O'Hara | 1872-01-25; 1893-09; 1944-04-10 | MA | 701, 704 |
| 1732 | George, Joseph | O'Hara | 1880 | ON | 770 |
| 2647 | George, M. | O'Hara | 1 1 4 0, |
| 2078 | George, P. | O'Hara | 1889 | NY | 894 |
| 694 | George, Patterson | O'Hara | 1839 | TN | 008, 221, 253, 429 |
| 643 | George, T. | O'Hara | 1849 | ON | 238 |
| 1665 | George, Thomas | O'Hara | EN | 760, 780, 745, 816 |
| 1316 | Georgia | O'Hara, Handly, Cowles | 2001-07-13 | TX | 559 |
| 2317 | Gerald | O'Hara | 1899 | PA ? | 981 |
| 1863 | Gerald | O'Hara | PA ? | 794 |
| 2275 | Gerald | O'Hara | 1913, 1930 | OH | 984, 1 0 6 4, |
| 2350 | Gerald, Patrick, Archbishop | O'Hara | 1895-05-04; 1963-07-16 | PA, GA, IR, EN | 983 |
| 1578 | Gertrude | O'Hara | MA | 701, 704 |
| 2391 | Gertrude | O'Hara | 1895-01-27, 1920, 1980-08 | LA | 1 0 2 6, 1 0 2 9, |
| 620 | Gertrude | O'Hara | MA | 188 |
| 1426 | Gladys | O'Hara, Lynn | ON | 607, 752 |
| 2686 | Glenn | O'Hara | 1 1 6 4, 1 1 6 8, |
| 268 | Grace | O'Hara, O'Neill | 1580, 1603 | IR, VA | IRELAND | 058, 069, 144, 474, 475, 694 |
| 2342 | Grace | O'Hara | NY, MA ? | 995 |
| 2661 | Grace | O'Hara | 1 1 4 3, |
| 913 | Grace | O'hara, McCammon ? | 1934 | US | 324 |
| 404 | Grace | Thomas, O'Hara | CA ? | 106 |
| 1717 | Grace | O'Hara, Wolfe | 1834, 1867 | IR | CORK | 627, 763, 796, 875 |
| 230 | Grace | O'Hara | MA | 086, 827 |
| 229 | Grace, Adeline | Sears, O'Hara | 1920 ? | MA | 049, 086, 118, 587, 588, 827 |
| 1050 | H(arry ?) | O'Hara | 1919-03-02 | SL | SCOTLAND | 386, 451 |
| 2252 | Hanna | Doran, O'Hara | 1858-08; 1878; 1899 | NY | IRELAND | 961 |
| 1401 | Hannah | O'Hara | EN | 602 |
| 893 | Hannah | Doherty, O'Hara | 1860, 1880 ? | SL, PA | 309 |
| 1689 | Hannah | Pearson, Johnson, O'Hara | 1826 | EN | 777 |
| 697 | Hannah | O'Hara | 1775, 1842-09-29 | OH | 225, 273, 275, 276 |
| 2262 | Hannah | O'Hara | 1848 | CN | 968 |
| 1761 | Hannah | O'Hara | NY | 783 |
| 2196 | Hannah, Hanna | Goodwin, O'Hara | 1841?, 1857, 1881 | SL | IRELAND | 942, 955 |
| 2063 | Hannora, Nora | Hickey, O'Hara | 1916 | 842, 844 |
| 2292 | Hannorah (3) | O'Hara, Eagan | 1850, 1909 | PA | 981 |
| 718 | Hanson | O'Harrah, O'Hara | 1838 | PA, FL | 241 |
| 1311 | Harold | O'Hara | ON | 684 |
| 1331 | Harold | O'Hara | EN, SL ? | ENGLAND | 571 |
| 2331 | Harriet | O'Hara | 1904 | MA | 993 |
| 1058 | Harriette | O'Hara | 1845+ | IR | ANTRIM | 394, 612 |
| 318 | Harrison | O'Hara, O'Harra | 1827, 1855-12-20, 1860-08-16, 1862-08-06, 1865-01-03 | OH, IA | 079, 145, 979, 1 1 7 0, 1 1 7 1, 1 1 7 2, 1 1 7 9, 1 1 8 0, 1 1 8 1, 1 1 8 5, |
| 2231 | Harrison | O'Hara | 1869 | IN ? | 956 |
| 1307 | Harry | O'Hara | 1890 | ON | 681, 683, 684, 558 |
| 76 | Harry | O'Hara | 1905 | PA, NY | 021, 064, 169 |
| 597 | Harry | O'Hara, O'Hora | PA | 184 |
| 618 | Harry | O'Hara | MA | 188 |
| 2042 | Harry | O'Hara | CT ? | 836, 1 0 0 6, 1 0 4 4, |
| 1325 | Hartford | O'Hara | MT | 562, 824 |
| 442 | Hartford | O'Hara | ON | 123 |
| 2401 | Harvey, Harvy | O'Harra | 1827?, 1829?, 1832?, 1880+ | NY | 1 0 3 6, 1 0 3 7, 1 0 3 8, |
| 1745 | Hazel | O'Hara | WA | 772, 773 |
| 1828 | Hazel | O'Hara | 786 |
| 2376 | Hazel | Pederson, O'Hara | OR ? | 1 0 1 4, |
| 695 | Hazel | O'Hara, O'Horo, Titterington | 1910, 1918 | NY | 488 |
| 2690 | Heather | O'Hara | 1 1 6 4, 1 1 6 8, |
| 1489 | Helen | O'Hora, O'Hara ? | PA | 659 |
| 478 | Helen | O'Hara | SLIGO | 143 |
| 1560 | Helen | O'Hara | MA | 701, 704 |
| 1854 | Helen | O'Hara | PA ? | 794 |
| 2388 | Helen | O'Hara | 1901 | QB | 1 0 2 1, |
| 1192 | Helen | O'Neil, O'Hara | IR | ANTRIM | 499 |
| 380 | Helen, Ellen, Rita | O'Hara | 1907?, 1999 | PA | 133 |
| 584 | Helen, Theresa | O'Hara | 1884 | MA | 179 |
| 2219 | Hellen | O'Hara | IR, US | SLIGO | 948 |
| 1912 | Hellen, Nellie | O'Hara | 1879, 1957-06-14 | NY | 804 |
| 1343 | Henery | O'Hara | 1847 ? | IR, SL | ANTRIM | 575 |
| 2652 | Henrietta | Bartlett, O'Hara | 1850-02-20; 1880, 1901+ | ON | 1 1 4 1, 1 1 4 2, 1 1 4 9, 1 1 5 0, |
| 1229 | Henry | O'Hara | IL | 825 |
| 177 | Henry | O'Hara | 1759, 1823 | IR | ANTRIM | 039 |
| 186 | Henry | O'Hara | 1823 | IR | ANTRIM | 271 |
| 257 | Henry | O'Hara | 1823, 1840, 1852, 1867 | AU | DUBLIN, CORK | 057, 074, 157 |
| 262 | Henry | O'Hara | 1857 | AU | 057 |
| 13 | Henry | O'Harra | IL | 002 |
| 1297 | Henry | O'Hara | 1812 ? | IL | 797 |
| 42 | Henry | O'Hara | DERRY | 233 |
| 823 | Henry | O'Hara | 1818-03-17; 1850, 1874, 1900-08-19 | NY, MN | MAYO | 297 |
| 2380 | Henry | O'Hara | 1845 | SL | 1 0 1 6, |
| 593 | Henry | O'Hara, O'Hora | PA | 184 |
| 595 | Henry | O'Hara, O'Hora | 1855 | PA | 184, 284 |
| 2140 | Henry | O'Hara | 1837-04-08 | IR | ANTRIM, DERRY ? | 895 |
| 621 | Henry | O'Hara | MA | 188 |
| 1647 | Henry | O'Hara | 1900 ? | IL | IRELAND ? | 768 |
| 2432 | Henry | O'Hara | 1858, 1862?, 1880+ | CT | 1 0 4 0, 1 0 4 1, 1 0 4 2, |
| 132 | Henry | O'Hara | PA | 034 |
| 140 | Henry | O'Hara | IRELAND | 044 |
| 2451 | Henry | O'Hara | 1825-07-26; 1850-07-29; 1874+ | SL ?, EN, AU | CAVAN | 1 0 5 7, |
| 175 | Henry | O'Hara | OH, WI, IA | 038, 248, 283 |
| 704 | Henry | O'Hara | MD, PA | 227 |
| 716 | Henry | O'Harrah | 1812, 1860 | PA | 241, 249 |
| 722 | Henry | O'Harrah, O'Hara | 1848 | PA, FL | 241 |
| 217 | Henry | O'Harrow | 1867-04-14 | OH | 047, 551 |
| 731 | Henry | O'Harrah | 1852 | PA ? | 354, 241 |
| 2527 | Henry | O'Hara | c. 1767 | IR | DERRY ? | 1 1 1 4, |
| 2531 | Henry | O'Hara | 1833-10-27 | IR | SLIGO | 1 1 5 3, |
| 2029 | Henry | O'Hara | 1858 | CT | IRELAND | 836, 1 0 0 6, 1 0 4 4, |
| 1649 | Henry (2) | O'Hara | IL | 768 |
| 2530 | Henry (2) | O'Hara | 1826 | ON | 1 1 1 4, |
| 1528 | Henry, Clancy | O'Hara | US ? | 680 |
| 1393 | Henry, Clay | O'Hara ? | PA ? | 596 |
| 2462 | Henry, Francis | O'Hara | 1874 | AU | 1 0 5 7, |
| 2372 | Henry, H., J. P. | O'Hara | 1861 | IR | ANTRIM | 1 0 1 2, 1 0 1 3, |
| 1729 | Henry, John | O'Hara | 1868, 1892 | ON | 770 |
| 1880 | Henry, Jr. | O'Hara | 1812 ? | MD, KY, IL | IRELAND | 797, 869, 870 |
| 2726 | Henry, Jr. | O'Hara | IL | 1 1 9 0, |
| 2718 | Henry, Laborn | O'Hara | 1850 ?, | 1 1 8 9, |
| 1771 | Henry, Longhair | O'Hara | 1769, 1890 | IR, NY | DERRY | 784, 883, 901, 992 |
| 2651 | Henry, Seymour ?, B. ? | O'Hara | 1846-06-23; 1880, 1901+ | ON | 1 1 4 1, 1 1 4 2, 1 1 4 9, 1 1 5 0, |
| 2724 | Henry, Sr | O'Hara | 1 1 9 0, |
| 1881 | Henry, Sr. | O'Hara | 1812 ? | MD | IRELAND | 870, 797, 869 |
| 2137 | Henry, Uncle, Longhair | O'Hara | ON | 896, 898 |
| 1839 | Herbert | O'Hara | 786 |
| 1837 | Hessie | O'Hara | 786 |
| 33 | Hester | O'Hara | 1839 | TN | 008 |
| 693 | Hester | Alexander, O'Hara | 1820 | KY | 221, 253, 429 |
| 495 | Honor | O'Hara | 1846 | IR | SLIGO | 654 |
| 1630 | Honor, Annie | O'Hara, Sandford | 1854, 1880s, 1950 | EN | IRELAND | 723, 756 |
| 631 | Honora | O'Hara, King | 1844, 1865, 1879-01 | NY, KS | CORK, CLARE | 191 |
| 371 | Hubert | O'Hara | 1800+ | IR | MAYO, SLIGO | 098 |
| 1786 | Hubert | O'Hara | 1903, 1911, 1935 | PA, NJ | ROSCOMMON | 785, 831, 832 |
| 1789 | Hubert | O'Hara (Regan?) | 1901 | PA | 831 |
| 810 | Hugh | O'Hara | IA, OH | 288 |
| 1330 | Hugh | O'Hara | 1750 ? | QB | IRELAND, ANTRIM ? | 564, 622 |
| 2368 | Hugh | O'Hara | 1865 | PA | 1 0 0 9, |
| 2374 | Hugh | O'Hara | OR | 1 0 1 4, |
| 1116 | Hugh | O'Hara, O'Hare | 1799 | PA, OH ? | 439 |
| 1631 | Hugh | O'Hara | 1856, 1915 | PA | 724, 728 |
| 1887 | Hugh | O'Hara | c. 1890 | PA | 799, 985 |
| 867 | Hugh | O'Hara | 1869-06-01, 1794 ? | IR | ANTRIM | 356 |
| 869 | Hugh | O'Hara | 1858-12-08, 1828 ? | IR | ANTRIM | 356 |
| 1895 | Hugh | O'Hara | 1908, 1986 | PA | 799 |
| 361 | Hugh | O'Hara | MA | 090 |
| 1901 | Hugh | O'Hara | 1854. 1916-02-24 | NY | 804 |
| 1700 | Hugh | O'Hara | 1876 | 838 |
| 2225 | Hugh | O'Hara | VA | 954 |
| 696 | Hugh | O'Hara | 1777, 1844-10-05 | OH, PA ? | 225, 273, 275, 276 |
| 698 | Hugh | O'Hara | IN | 225, 273, 275, 276 |
| 464 | Hugh | O'Hara | 1810, 1820, 1850, 1860 | OH | IRELAND | 140 |
| 738 | Hugh | O'Hara | US ? | 304 |
| 2227 | Hugh, Jr. | O'Hara | 2003 | VA ? | 954 |
| 1633 | Hugh, Leo | O'Hara | 1897, 1960 | PA | 724, 728, 729, 730, 731 |
| 1635 | Hugh, Leonard | O'Hara | 1924 | PA | 727, 729, 730, 731 |
| 2413 | Ida | O'Harra | 1853?, 1870+ | NY | 1 0 3 7, |
| 276 | Ida, May | Odenath, O'Hara | 1875-01-25, 95-12-27 | PA | 061, 155 |
| 1740 | Ida, Rosalie | O'Hara | 1893 | ON | 770 |
| 2421 | Ielitta | O'Harra | 1852?, 1860+ | NY | 1 0 3 8, |
| 1583 | Irene | O'Hara | MA | 701, 704 |
| 2663 | Irene | O'Hara | 1 1 4 3, |
| 1977 | Irene | O'Hara | MO | 821 |
| 2037 | Irene | O'Hara | CT | 836, 1 0 0 6, 1 0 4 4, |
| 1275 | Irene | O'Hara | 1885 | PA | 530 |
| 305 | Isaac | O'Hara, O'Harra | 1849, 1870 | WI, IA, OH | 094 |
| 73 | Isaac | O'Hara, O'Harra | 1817, 1870 | OH, WI, IA, PA ? | 041, 248, 283 |
| 169 | Isaac | O'Hara, O'Harra | 1814, 1840, 1890 | OH, WI, IA, PA ? | 038, 248 |
| 1021 | Isaaha | O'Hara | IR | IRELAND | 371 |
| 884 | Isabel | McCashin, O'Hara | 1828-11-02, 1851 ? | IR | ANTRIM | 309 |
| 27 | Isabella | O'Hara, MacDonald | 1870 | ND, BC | 025, 084 |
| 1379 | Isabella | McCashin, O'Hara | 1828-11-02 | IR, SL ? | ANTRIM | 592 |
| 403 | Iva | Horton, O'Hara | CA ? | 106 |
| 2674 | Ivanna | O'Hara | 1882, 1930+ | KY, MO | 1 1 5 1, 1 1 5 7, |
| 2164 | Iven | O'Harra | c.1850 | IN, OR | 924, 1 0 1 1, |
| 875 | J. | O'Hara | 1921-07-30 | ON | 307 |
| 215 | J. | O'Harra | 1820 | PA | 071 |
| 1518 | J. | O'Hara | 1888 | MN | 668 |
| 1519 | J. Sr. | O'Hara | 1888 | MN | 668 |
| 2002 | J., Godfrey | O'Hara | 1928 | NY | 833 |
| 877 | J., J. | O'Hara | 1921-07-30 | ON | 307 |
| 233 | J., J. | O'Hara | 1820 | CN | 051, 052, 396, 397, 398, 399, 663 |
| 633 | Jack | O'Hara | 1926, 1940 | IR | DUBLIN | 193, 232, 363 |
| 393 | Jack ? | O'Hara | US | 122 |
| 568 | Jack, W. | O'Hara | GA | 359 |
| 700 | Jack, W. | O'Hara | 1960 | SC | 226 |
| 1599 | Jacob | O'Hara | 1828 | EN ? | 707 |
| 1209 | Jacob | O'Hara | 1828 | 761 |
| 1205 | Jacob, James ? | O'Hara | 1854, 1858, 1860 | WI | 502, 514 |
| 1447 | James | O'Hara | IR, IA, MN ? | 648 |
| 1468 | James | O'Hara | 1857 ?, 1860 | KY, OH | 657 |
| 737 | James | O'Hara | US ? | 304 |
| 878 | James | O'Hara | 1790 ? | KY | IRELAND | 308 |
| 347 | James | O'Hara, Hara | 1826 | IR | KERRY | 088 |
| 1028 | James | O'Hara | OH, PA | 376 |
| 1030 | James | O'Hara | 1868 | OH, PA, CA | IRELAND | 463 |
| 1032 | James | O'Hara | OH?,PA?, CA | 463 |
| 11 | James | O'Harrah | 1814 | PA, OH | 060 |
| 523 | James | O'Hara | 1856, 1889-02-15 | NY | ROSCOMMON | 153, 224, 481, 788, 967 |
| 270 | James | O'Hara | US | 059 |
| 1294 | James | O'Hara, O'Harah | 1800+ | PA | 541 |
| 2065 | James | O'Hara | <1936 | AU | ANTRIM | 843, 845 |
| 1301 | James | O'Hara | 1846, 1848 | ON | 558, 686, 336, 402, 892, 898, 965, 972 |
| 2073 | James | O'Hara | NY | 847 |
| 1306 | James | O'Hara | 1875-10-31; 1881+ | ON | 558, 644, 884, 910, 923, 1 0 0 1, 1 0 3 1, |
| 2335 | James | O'Hara | SL | 994 |
| 289 | James | O'Hara | 1884 | EN | 743, 744, 745, 760, 748, 817 |
| 2082 | James | O'Hara | 1910 | IA | 853 |
| 2084 | James | O'Harra | c. 1800 ? | NC, SC, AL ? | 855 |
| 2597 | James | O'Hara | 1856, 1870, | IL | IRELAND | 1 1 0 5, |
| 550 | James | O'Hara | 1890 | PA | 165, 338, 736 |
| 551 | James | O'Hara | 1814, 1896 | PA ? | 313 |
| 41 | James | O'Hara | 1771 | NY | DERRY | 233, 569 |
| 43 | James | O'Hara | 1805 | DERRY | 233 |
| 2353 | James | O'Hara | 997, 999 |
| 2611 | James | O'Harra | 1864, 1870, | IL | IRELAND | 1 1 0 4, |
| 2102 | James | O'Hara | 1918 | NY | 880 |
| 1336 | James | O'Hara | 1798-03-17; 1823; 1891-03-20 | IR, MN | LIMERICK | 574, 577, 735 |
| 2616 | James | O'Hara | 1862, 1870, | WI, IL, | 1 1 0 4, |
| 1339 | James | O'Hara | 1838 | IR | LIMERICK | 735 |
| 1612 | James | O'Hara | CT | MAYO | 708 |
| 338 | James | O'Hara | 1864? | NY | 085 |
| 2643 | James | O'Hara | 1828, 1831+ | ON | 1 1 3 9, 1 1 5 6, |
| 340 | James | O'Hara | 1830, 1880 | CN, NY | 114 |
| 1364 | James | O'Hara | IR | LIMERICK | 583 |
| 85 | James | O'Hara | 1840-02, 1871-10-09 | QB | 022 |
| 854 | James | O'Hara | 1850 ? | NY | LEITRIM ? | 306 |
| 1878 | James | O'Hara | 1799, 1884 | IL | 869 |
| 87 | James | O'Hara | 1842-02-08 | QB | 051 |
| 1368 | James | O'Hara | 1888 ? | MA ? | IRELAND | 588 |
| 1376 | James | O'Hara | NY | SLIGO | 814 |
| 2145 | James | O'Hara | 1837 | IR | ANTRIM, DERRY ? | 895 |
| 355 | James | O'Hara | 1875-10 | MA, IL | 089 |
| 1383 | James | O'Hara | IR, SL ? | ANTRIM | 592 |
| 1642 | James | O'Hara | PA | 728, 724 |
| 1133 | James | O'Hara | 1892 | IR, SL | LEITRIM | 454, 456 |
| 890 | James | O'Hara | 1851 ? | IR, SL | ANTRIM | 309 |
| 2428 | James | O'Hara | 1849?, 1860+ | CT | 1 0 3 9, 1 0 4 0, |
| 2175 | James | O'Hara | 1795 | IR | SLIGO | 930 |
| 2185 | James | O'Hara | 1858 | NY | 932 |
| 654 | James | O'Hara | 1890 | ON | 238 |
| 2191 | James | O'Hara | 1850 ? | WI | MAYO ? | 936 |
| 918 | James | O'Hara | US | 324 |
| 1687 | James | O'Hara | 1869 | EN | 777 |
| 2199 | James | O'Hara | 1862-10-18 | SL | 942 |
| 2457 | James | O'Hara | 1861 | EN, AU | 1 0 5 7, |
| 668 | James | OHara | IR | TYRONE | 203, 207 |
| 2206 | James | O'Hara | 1874-11-29; 1900-12-21 | SL | 942, 955 |
| 673 | James | O'Hara | 1875 | MA ?, IL | 208 |
| 418 | James | O'Hara | 1830 | CN, NY | 115 |
| 1445 | James | O'Hara | 1798-03-17; 1802 ?, 1847, 1891-03-20 | IR, IA, MN | LIMERICK | 648, 669 |
| 1958 | James | O'Hara | 1887-10, 1904, 1914+ | MB, AB | ANTRIM | 279, 818 |
| 1191 | James | O'Hara | IR | ANTRIM | 499 |
| 2221 | James | O'Hara | IR, US | SLIGO | 948 |
| 430 | James | O'Hara | IR, MA | IRELAND | 118 |
| 2738 | James | O'Hara | 1893-07 | MA | 1 1 9 6, 1 2 0 0, |
| 1975 | James | O'Hara | 1860s | CN, IL | 821 |
| 953 | James | O'Hara | 1892 | IR | LEITRIM | 795 |
| 1213 | James | Hara | 1823, 1852, 1901 ? | IR | KERRY | 613 |
| 191 | James | O'Harrah | 1814, 1896 | PA, OH | 046, 268, 311, 312 |
| 2751 | James | O'Hara | 1824, 1860+ | PA | IRELAND | 1 2 1 0, |
| 2756 | James | O'Hara | 1852, 1860+ | PA | 1 2 1 0, |
| 709 | James | O'Hara | PA ? | 254 |
| 1989 | James | O'Hara | PA | 830 |
| 1226 | James | O'Hara | ON ? | ENGLAND ? | 516, 825 ? |
| 1228 | James | O'Hara | CN, IL | 825, 516 ? |
| 973 | James | O'Hara | 1862 | AU | CAVAN | 360 |
| 471 | James | O'Hara | 1864 | SLIGO | 143, 196 |
| 2263 | James | O'Hara, Judge | 1810?, 1845, 1865 | AU | LEITRIM ? | 974, 977, 978 |
| 1754 | James | O'Hara | 1830s, 1840s, 1911 | ON?, NY | IRELAND | 783 |
| 2267 | James | O'Hara | 1857 | AU | 974, 975 |
| 220 | James | O'Hara | 1800 | IRELAND | 716 |
| 2529 | James | O'Hara | 1826 | ON | 1 1 1 4, 1 1 4 9, |
| 994 | James | O'Hara | 1887, 1919 ? | CN | IRELAND | 506 |
| 1762 | James | O'Hara | NY | 783, 877? |
| 485 | James | O'Hara | IR | SLIGO | 535, 653 |
| 1768 | James | O'Hare?, O'Hara | 1877?; 1901-08-08 | NY, IL ? | 877, 783 ? |
| 234 | James | O'Hara | 1842 | ON, QB | 052, 663 |
| 2027 | James | O'Hara | 1848, 1849 | CT | IRELAND | 836, 1 0 0 6, 1 0 4 4, |
| 237 | James | O'Hara | 1867 | ON | 228, 666 |
| 1263 | James | O'Hara | 1880 ?, 1881 | EN | 764 |
| 756 | James | O'Hara | 1858, 1870 | KY, NJ, NY | IRELAND | 255 |
| 758 | James | O'Hara | 1858 | KY | 255 |
| 505 | James | O'Hara | IR ? | MAYO | 146 |
| 761 | James | O'Hara | NJ | 257, 171, 182 |
| 253 | James | O'Hara | 1855 | NY, WI | 053 |
| 881 | James Jr. | O'Hara | 1790 ? | KY | IRELAND | 308 |
| 749 | James M. | O'Hara | 1848, 1883, 1888 | OH | DUBLIN | 243 |
| 665 | James, F. | O'Hara | 1822-09-14, 1845, 1901-12-28 | MD | MAYO | 200 |
| 1430 | James, "William" | O'Hara | 1750-1817 | GA, SC ? | IRELAND | 698 |
| 1052 | James, A. | O'Hara | 1914, 1918 | EN | 449, 933 |
| 1625 | James, A. | O'Hara | 1918, 1919, 1924 | PA | 721 |
| 1627 | James, A. (2) | O'Hara | 1920 | PA | 721 |
| 752 | James, Arthur | O'Hara | 1888 | OH | 243 |
| 2420 | James, B. | O'Harra | 1851?, 1860 | NY | 1 0 3 8, |
| 556 | James, Daniel | O'Hara | 1884 ? | IL ? | 168 |
| 457 | James, E. | O'Hara | 1865, 1919 | MA, PA | 129 |
| 558 | James, Edward | O'Hara | 1880, 1920 | NJ | 171, 182, 257 |
| 834 | James, Edward | O'Hara | 1865, 1909 | ON, PA ? | 305 |
| 381 | James, Edward | O'Hara | 1865, 1909 | ON | 192 |
| 979 | James, Edward | O'Hara | 1860, 1865 | MA | IRELAND | 364 |
| 466 | James, F. | O'Hara | 1822-09-14, 1845, 1901-12-28 | MD | MAYO | 200, 201 |
| 2303 | James, Felix | O'Hara | 1887-10-03; 1969-12-07 | MN | 981 |
| 1620 | James, Francis | O'Hara | 1926(?)-12-07; 1989 ? | NY | 708 |
| 71 | James, G. | O'Harrah | 1825 | OH | 018 |
| 1981 | James, General | O'Hara | 1752, 1819 | PA | IRELAND | 872 |
| 2107 | James, Harvey, Henry ? | O'Hara, O'Haro, O'Harrow | 1845-10-25; 1866-12-16; 1919-04-11 | IN | 881, 950, 956 |
| 829 | James, Henry | O'Hara | PA | 302 |
| 2235 | James, Henry | O'Hara | 1872-09-08; 1896; 1945-06-27 | 956 |
| 1317 | James, Hezekiah | O'Hara | TX, AL ? | 559 |
| 1909 | James, J. | O'Hara | 1870-01-06; 1920-03-03 | NY | 804 |
| 2489 | James, J. | O'Hara | 1870?, 1880, | PA | 1 0 7 0, |
| 2173 | James, J. ?, A. ? | O'Hara | 1914, 1918+ | NY | 931 |
| 248 | James, Jacob | O'Hara | 1830s, 1843, 1855, 1858 | NY, WI | SLIGO | 053, 510, 556, 935, |
| 2187 | James, Joseph | O'Hara | 1866 | NY | 932 |
| 2316 | James, Lawrence | O'Hara | 1896 | PA | 981 |
| 897 | James, Mark | O'Hara | 1952, 1956 | CA, OR | 317 |
| 1185 | James, Michael | O'Hara | 1914-06-24; 1988-02-20 | NE, CA | 496 |
| 119 | James, Patrick | O'Hara | 1867 | ON | 239 |
| 1657 | James, Patrick | O'Hara, O'Hare | 1967, 1968 | NC | 737 |
| 650 | James, Patrick | O'Hara | 1867 | ON | 238 |
| 1676 | James, Patrick | O'Hara | 1949 ?, 1967, 1968 | NJ, NC | 750 |
| 920 | James, Patrick | O'Hara | 2002 | US ? | 779 |
| 1390 | James, Phillip | O'Hara | PA, IN ? | 595 |
| 1394 | James, Phillip | O'Hara ? | PA ? | 596 |
| 1774 | James, Squire | O'Hara | 1797, 1882 | NY | 784, 883, 901 |
| 1501 | James, Thomas | O'Hara | 1960 | PA | 659 |
| 1570 | James, Vincent | O'Hara | 1867-07-19; 1889-09-29; 1954-10-22 | MA | 701, 704 |
| 346 | Jane | O'Hara | 1857 | NY | 114 |
| 768 | Jane | O'Hara | 1854, 1892 | IR | MAYO, DERRY, DOWN | 263 |
| 524 | Jane | O'Hara, Bartell | 1834, 1851, 1922-05-26 | NY | DOWN, DERRY ? | 158, 160 |
| 273 | Jane | Boyde, O'Hara | 1827 | US? | ROSCOMMON? | 100, 101 |
| 1063 | Jane | Johnston, O'Hara | 1843, 1845 | EN | ENGLAND ? | 401 |
| 2098 | Jane | O'Hara | 1842, 1843 | ON | IRELAND | 873 |
| 819 | Jane | Montgomery, O'Hara | 1863-09-17 | IR | ANTRIM | 296, 322 |
| 1094 | Jane | Boyd, O'Hara | 1852, 1874, 1926 | SL | ANTRIM | 430 |
| 72 | Jane | Beach, O'Harah | 1829-12-07 | OH | 018 |
| 1118 | Jane | O'Hara, O'Hara | 1806 | PA, OH ? | 439 |
| 394 | Jane | O'Hara | US | 122 |
| 420 | Jane | O'Hara, Howard | 1855 | CN, NY | 115 |
| 1194 | Jane | Boyd, O'Hara | 1874 | SL | ANTRIM | 499 |
| 1726 | Jane | O'Hara, Teskey | 1859 | ON | 770 |
| 717 | Jane | Ferrier, O'Harrah | 1814 | PA | 241 |
| 1259 | Jane | O'Hara | 1870, 1881 | EN | 764 |
| 1269 | Jane | O'Hara | 1863, 1871 | EN | 759, 811 |
| 765 | Jane | McGuggan, O'Hara | 1801, 1879 | IR | MAYO, DERRY, DOWN ? | 263 |
| 930 | Jane ? | O'Hara | SL | 464 |
| 1494 | Janet | O'Hora, O'Hara ? | PA | 659 |
| 2467 | Jas, James ? | O'Hara | 1843, 1850 | NY | IRELAND | 1 0 5 8, |
| 2657 | Jasmine | O'Hara | 2004+ | 1 1 4 3, |
| 1939 | Jason, Richter | O'Hara | 1977-06-22; 2003+ | NY | 804 |
| 1279 | Jean | Traynor, O'Hara | SL | 532 |
| 1332 | Jean | McGinty, O'Hara | 1890 ? | SL ? | SCOTLAND | 571 |
| 2123 | Jean | O'Hara | PA | 889 |
| 2694 | Jean | O'Hara | 1900s | SL | SLIGO | 1 1 7 8 |
| 1321 | Jeannette, Marie | O'Hara | TX | 561 |
| 1554 | Jennie | McDevitt, O'Hara | 1916, 1918, 1933 | WA | 860, 861, 863 |
| 569 | Jennie | O'Hara | GA | 359 |
| 699 | Jennie | O'Hara | 1960 | SC | 226 |
| 859 | Jennie, Belle | O'Hara | 1880-10-14 | IN | 303 |
| 1026 | Jennie, C. | Siferte, O'Hara, Fry | 1882 | OR | 375, 1 0 1 4, |
| 1910 | Jennie, E. | McCarthy, O'Hara | NY | 804 |
| 2274 | Jennirose, E. | O'Hara | 1909, 1930 | OH | 984, 1 0 6 4, |
| 150 | Jeremiah | O'Hara, O'Harah | c.1854, 1857?, 1880, 1883, 1893, 1925 | NY | 042, 374, 986, 1 0 6 1, 1 0 6 2, |
| 2417 | Jeremie | O'Harra | 1862?, 1870+ | NY | 1 0 3 7, |
| 846 | Jerome | O'Hara | ON, PA, NJ ? | 298, 305 |
| 2504 | Jerome | O'Hara | 1864-07-19 | NY | 1 0 7 2, 1 1 0 0, 1 1 2 1, 1 1 2 2, |
| 1709 | Jerry | O'Hara | PA | 762 |
| 2474 | Jerry, Jerimiah | O'Hara | 1854, 1870 | NY | 1 0 5 9, 1 0 6 0, |
| 2083 | Jessie, E. | Harris, O'Hara | 1910 | IA | 853 |
| 1634 | Jewel | O'Hara | 1897 | PA | 724, 728 |
| 1832 | Jim | O'Hara | 786 |
| 828 | Jim | O'Hara, Rodgers | 1857-01 | OK, TX, LA, MS | IRELAND | 300, 647 |
| 1956 | Jim | O'Hara | 1922?, 2002+ | PA | 813 |
| 1652 | Jimmy | O'Hara | IL | 768 |
| 1470 | Joan | Birks, O'Hara | 1950 | EN | 658 |
| 1618 | Joan, Marie | O'Hara, Foley | 1924-05-23; 2002+ | NY | 708 |
| 1303 | Joanna, Johanna | Whelan, O'Hara | 1850?; 1873-10-28; 1878; 1936 | ON, NY | IRELAND ? | 558, 644, 790, 871, 884, 919, 922, 923, 938, 997, 1 0 0 1, 1 0 2 0, 1 0 3 1, |
| 1377 | Joe | O'Hara | NY | SLIGO ? | 814 |
| 1708 | Joe | O'Hara | PA | 762 |
| 2220 | Joe | O'Hara | IR, EN | SLIGO | 948 |
| 1064 | Johanna | O'Hara, Moll | NY | IRELAND | 408 |
| 1755 | Johanna | O'Hara | 1830s, 1840s, 1883 | ON?, NY | IRELAND | 783 |
| 1200 | John | O'Hara | 1926 ?; 1956-01-27 | ME ? | 500 |
| 519 | John | O'Hara | 1864-06-28 | SL | 180 |
| 1292 | John | O'Hara, O'Harah | 1800+ | PA | 541 |
| 1363 | John | O'Hara | IR | LIMERICK | 583 |
| 1465 | John | O'Hara | 1849 ?, 1860 | NY, OH | 657 |
| 474 | John | O'Hara | SLIGO | 143 |
| 735 | John | O'Hara | US ? | CORK | 304 |
| 2 | John | O'Hara | 1845 | US | CAVAN | 004 |
| 2307 | John | O'Hara | 1895-06; 1896?; 1900+ | MN | 981 |
| 1796 | John | O'Hara | 786 |
| 525 | John | O'Hara | 1860 | NY | 154 |
| 527 | John | O'Hara | NY | 161, 154 |
| 1555 | John | O'Hara | 1850s, 1900 | PA, MA | DERRY | 701, 704, 717 |
| 2069 | John | O'Hara | 1900s | NY | SLIGO | 847 |
| 2583 | John | O'Hara | c. 1877, 1880, | MD, IL | 1 1 0 6, |
| 1305 | John | O'Hara | 1875-10-31; 1881+ | ON | 558, 644, 884, 910, 923, 1 0 0 1, 1 0 3 1, |
| 26 | John | O'Hara | 1880, 1900 | ND | 007 |
| 2330 | John | O'Hara | 1904 | MA | 993 |
| 1051 | John | O'Hara | 1914, 1918 | SL | SCOTLAND | 386 |
| 284 | John | O'Hara | 1871 | EN | 743, 744, 745, 760, 748, 817 |
| 2334 | John | O'Hara | SL | 994 |
| 1318 | John | O'Hara | 1854, 1855, 1890 | WI, CA | 560 |
| 2086 | John | O'Hara | 1840s | IR | WEXFORD, DUBLIN | 856 |
| 39 | John | O'Hara | 1800, 1820 | NY | 011, 233, 569 |
| 2600 | John | O'Hara | 1827, 1870, | IL | IRELAND | 1 1 0 5, |
| 818 | John | O'Hara | 1832, 1863-09-17 | IR | ANTRIM | 296, 322 |
| 2358 | John | O'Hara | 1860s | MA | DERRY | 701, 704 |
| 2362 | John | O'Hara | 1850 | PA | 1 0 0 9, 1 0 1 8, |
| 573 | John | O'Hara | 1805, 1831, 1848, 1850 | CN, PA, IL, MO | 178 |
| 1341 | John | O'Hara | 1847 | IR | ANTRIM | 575 |
| 1597 | John | O'Hara, O'Harra | 1870 | OH | 705, 722, 733, 739, 854 |
| 2109 | John | O'Hara, O'Harrow | 1825 ?; 1842-04-19 | OH | 881, 950, 956 |
| 1086 | John | O'Hara | 1871-09 | IR | ANTRIM | 423 |
| 1344 | John | O'Hara | 1850? | NY | IRELAND | 581 |
| 2626 | John | O'Hara | 1860 ? | GA | 1 2 3 2, |
| 1859 | John | O'Hara | PA | 794 |
| 68 | John | O'Hara | 1855 | NY | 016 |
| 1351 | John | O'Hara | 1855-10; 1862 | WI ? | SCOTLAND | 598, 600 |
| 1610 | John | O'Hara | 1920s, 1930s | NY | MAYO | 708 |
| 844 | John | O'Hara | ON, PA, NJ ? | 298, 305 |
| 1100 | John | O'Hara | EN | 432 |
| 2126 | John | O'Hara | PA | 889 |
| 2638 | John | O'Hara | 1850 ? | ON ?, MI ?, NY | LEITRIM, MAYO | 1 1 0 1, |
| 1874 | John | O'Hara | 1812 ? | WI, MD ? | 797, 870 |
| 852 | John | O'Hara | 1850 ? | NY | LEITRIM ? | 306 |
| 1108 | John | O'Hora, O'Hara | 1850, 1880 ? | NY | 436 |
| 605 | John | O'Hara | PA | 277 |
| 861 | John | O'Hara | IN | 303 |
| 1373 | John | O'Hara | 1879 | NY | SLIGO | 591 |
| 607 | John | O'Hara | 1905, 1970 | PA | 277, 285, 384, 385, 1 0 7 0, |
| 352 | John | O'Hara | MA, IL | 089 |
| 2146 | John | O'Hara | 1837 | IR | ANTRIM, DERRY | 895 |
| 1380 | John | O'Hara | IR, SL ? | ANTRIM | 592 |
| 1892 | John | O'Hara | PA | 799 |
| 872 | John | O'Hara | EN, CN | IRELAND | 327, 674 |
| 876 | John | O'Hara | 1921-07-30 | ON | 307 |
| 1900 | John | O'Hara | 1850, 1851, 1855, 1920 | NY | LEITRIM | 804 |
| 2159 | John | O'Hara | 1900-08-08 | ON | 926 |
| 1392 | John | O'Hara, O'Harah ? | 1819 ? | PA | 596 |
| 885 | John | O'Hara | 1851 ? | IR, SL | ANTRIM | 309 |
| 374 | John | O'Hara | 1850, 1870, 1880 | IR, PA, IL | MAYO | 098 |
| 2427 | John | O'Hara | 1841?, 1844?, 1846?, 1880+ | EN?, NY, CT | IRELAND | 1 0 3 9, 1 0 4 0, 1 0 4 1, 1 0 4 2, |
| 636 | John | O'Hara | 1860 | ON | 195, 238, 663 |
| 129 | John | O'Hara | 1887 | 033 |
| 2435 | John | O'Hara | 1871?, 1880+ | CT | 1 0 4 2, |
| 2182 | John | O'Hara | 1853 | NY | 932 |
| 2439 | John | O'Hara | 1847?, 1880+ | CT | IRELAND | 1 0 4 2 |
| 2442 | John | O'Hara | 1870-05, 1887, 1889, 1891, 1930+ | IL | IRELAND | 1 0 4 7, 1 0 4 8, 1 0 4 9, 1 0 5 0, |
| 907 | John | O'Hara | 1829 | EN | IRELAND ? | 323 |
| 1678 | John | O'Hara | 1900 | NY | 751 |
| 2446 | John | O'Hara | 1897-07-11 | IL | 1 0 5 2, |
| 2193 | John | O'Hara | IR, SL | 942 |
| 914 | John | O'Hara | US | 324 |
| 1686 | John | O'Hara | 1867 | EN | 777 |
| 2198 | John | O'Hara | 1860-05-01; 1881 | SL | 942, 955 |
| 2711 | John | O'Hara | c.1809 | 1 1 8 9, 1 1 9 0, |
| 1688 | John | O'Hara | 1826 | EN | IRELAND | 777 |
| 925 | John | O'Hara | SL | IRELAND | 464 |
| 1439 | John | O'Hara | IR | MAYO | 631 |
| 1441 | John | O'Hara | CA ? | MAYO | 671 |
| 674 | John | O'Hara | MA ?, IL | 208 |
| 931 | John | O'Hara | 357 |
| 2212 | John | O'Hara | 1881 | EN | ANTRIM | 947 |
| 935 | John | O'Hara | 357 |
| 680 | John | O'Hara | 1885 | NY | SLIGO | 261 |
| 1960 | John | O'Hara | 1780, 1794 | IR | CAVAN | 819 |
| 2472 | John | O'Hara | 1842, 1843, 1870 | NY | IRELAND | 1 0 5 9, 1 0 6 0, |
| 937 | John | O'Hara | 1858-08-07, 1910-09-16 | PA | ENGLAND | 339, 341 |
| 1195 | John | O'Hara | 1855-10, 1862; 1900, 1910, 1920 | IA, UT, WY | SCOTLAND | 599 |
| 1457 | John | O'Hara | 1850 ? | NY | MAYO ? | 650 |
| 2481 | John | O'Hara | 1846, 1920 | OH | IRELAND | 1 0 6 5, |
| 2482 | John | O'Hara, O'Harra | 1880, 1910 | OH | 1 0 6 6, |
| 2746 | John | O'Hara | 2004+ | IR | SLIGO | 1 1 9 7, (117?) |
| 445 | John | O'Hara | ON | 123 |
| 701 | John | O'Hara | 1812 ?, 1840, 1843 | MD, PA, WI ? | 227, 552, 797, 870 |
| 2497 | John | O'Hara | 1843, 1844 | QB, NY | LEITRIM ? | 1 0 7 2, 1 0 8 3, 1 0 9 3, 1 0 9 6, 1 1 0 0, 1 1 0 3, 1 1 2 1, 1 1 2 2, 1 1 2 6, 1 1 2 7, 1 1 2 8, 1 1 3 0, 1 1 3 7, 1 1 4 5, |
| 1739 | John | O'Hara | 1891 | ON | 770 |
| 2513 | John | O'Hara | 1830, 1860+ | NY | IRELAND | 1 0 8 2, |
| 1746 | John | O'Hara | WA | 772, 773 |
| 212 | John | O'Harrah | 1850 | PA, OH | 268 |
| 2519 | John | O'Hara | 1824, 1860+ | NY | IRELAND | 1 0 8 2, |
| 2266 | John | O'Hata | 1855 | AU | 974, 975 |
| 990 | John | O'Hara | 1851, 1875, 1901 | ON, WI | 766, 767, 769, 770 |
| 1247 | John | O'Hara | NJ | IRELAND | 593, 527, 594 |
| 226 | John | O'Hara | 1898 | IA | 251, 252 |
| 2277 | John | O'Hara | PA | 985, (799) |
| 486 | John | O'Hara | IR | SLIGO ? | 535, 653 |
| 1767 | John | O'Hara | NY | 783 |
| 1258 | John | O'Hara | 1867 ?, 1881 | EN | 764 |
| 1514 | John | O'Hara | 1890s, 1915 ? | CT | SLIGO | 643 |
| 2026 | John | O'Hara | 1841, 1846, 1847 | NY, CT | IRELAND | 836, 1 0 0 6, 1 0 4 4, |
| 2538 | John | O'Hara | 1857, 1860+ | IL | 1 0 8 8, 1 0 9 1, |
| 493 | John | O'Hara | 1841 | IR | SLIGO | 654 |
| 243 | John | O'Hara | ON | 228, 666 |
| 1525 | John | O'Hara | 1845 ?, 1888, 1904 | SL | DERRY | 672, 703 |
| 2293 | John | O'Hara | 1852 | PA | 981 |
| 247 | John | O'Hara, Harold, Harrold | 1875, 1900, 1915 | EN, CN | IRELAND | 328, 347, 340, 678, 775, 776 |
| 503 | John | O'Hara | 1850 | IR | MAYO | 146 |
| 1016 | John | O'Hara | 1880-08-21; 1968-12 | MI | 370?, 381,382 |
| 1272 | John | O'Hara | EN ? | 529 |
| 251 | John | O'Hara | 1855 | NY, WI | 053 |
| 507 | John | O'Hara | IR ? | MAYO | 146 |
| 764 | John | O'Hara | 1793, 1873 | IR | MAYO, DERRY, DOWN ? | 263 |
| 1532 | John | O'Hara | 1823-11-23 | IR | DOWN | 690 |
| 766 | John | O'Hara | 1816, 1910 | IR | MAYO, DERRY, DOWN | 263 |
| 2727 | John (1) | O'Hara | 1803 | OH | 1 1 9 0, |
| 2071 | John (2) | O'Hara | NY | 847 |
| 2728 | John (2) | O'Hara | IL, WI | 1 1 9 0, |
| 2517 | John (2) | O'Hara | 1858, 1860+ | NY | 1 0 8 2, |
| 2035 | John (2) | O'Hara | CT ? | 836, 1 0 0 6, 1 0 4 4, |
| 1023 | John (Jr.) | O'Hara | CT | MAYO | 372 |
| 1022 | John (Sr.) | O'Hara | CT | MAYO | 372 |
| 594 | John ? | O'Hara, O'Hora ? | PA | 184 |
| 873 | John ? | O'Hara | 1834, 1836 | IN | IRELAND | 675 |
| 392 | John ? | O'Hara | US | 122 |
| 1175 | John G. | O'Hara | 1891-02-08; 1937-12-09 | OH | 495, 635, 637, 638 |
| 1389 | John J. (2) | O'Hara | PA, IN ? | 595 |
| 30 | John James | O'Hara | 1807, 1861 | QB | ARMAGH | 084, 092 |
| 45 | John Patrick | O'Hara | 1860-08-20 | IA, IL | LIMERICK | 220 |
| 645 | John, J. | O'Hara | 1855 ?, 1886 | ON | 238, 272, 663 |
| 1628 | John, B. | O'Hara | 1922 | PA | 721 |
| 1658 | John, B. | O'Hara | 1876, 1877 | OH, PA | 741 |
| 942 | John, B. | O'Hara | 1859, 1865 ? | MO | 335 |
| 2645 | John, Doctor | O'Hara | 1830-09-21; | ON | 1 1 4 0, 1 1 5 6, |
| 1198 | John, E. | O'Hara | 1890?, 1970? | ME, FL | 500 |
| 583 | John, Edward | O'Hara | 1882 | MA | 179 |
| 941 | John, Edward | O'Hara | 1890-06-26 | PA ? | 341 |
| 1149 | John, F. | O'Hara | 1895, 1953 | NY | 480 |
| 415 | John, Fiske | O'Hara | 1848, 1890 | PA, SD | 006, 113 |
| 2135 | John, Francis | O'Hara | 1915, 1920, 1930 | NY, CT | 890, 980 |
| 402 | John, Gerald | O'Hara | MO, TX, CA | 106 |
| 2713 | John, H. | O'Hara | 1850 ?, | 1 1 8 9, |
| 459 | John, Henry | O'Hara | 1840, 1858 | QB, NY | MAYO | 138, 222 |
| 724 | John, Horance | O'Harrah, O'Hara | 1853 | PA, FL | 241 |
| 1388 | John, J. | O'Hara | 1819 ? | PA, IN | 595 |
| 115 | John, J. | O'Hara | 1855 | ON | 239 |
| 1914 | John, J. | O'Hara | 1884; 1914-11-02 | NY | 804 |
| 1168 | John, J. | O'Hara | KY | 495 |
| 728 | John, J. | O'Hara | 1887 | FL ? | 241 |
| 2309 | John, J.(4) | O'Hara | 1889, 1947 | PA | 981 |
| 839 | John, Jack | O'Hara | ON, PA ? | 305 |
| 1639 | John, Jack | O'Hara | PA | 728, 724 |
| 1169 | John, Jack | O'Hara | 1891 ? | OH, KY | 495, 635, 637, 638 |
| 2228 | John, Jack | O'Hara | 2003 | VA ? | 954 |
| 53 | John, Jack, James | O'Hara | 1865, 1920-04-25 | NY | 014, 015, 125 |
| 1935 | John, Jack, Robert | O'Hara | 1918-04-09; 1986-11 | NY | 804 |
| 803 | John, James | O'Hara | 1860 | ON, SK ? | 282, 287 |
| 90 | John, James | O'Hara | ON | 213 |
| 91 | John, James | O'Hara | 1807 | ON, QB | 215, 258 |
| 364 | John, James | O'Hara | 1807, 1861 | QB | ARMAGH | 091 |
| 637 | John, James | O'Hara | 1807, 1840, 1849 | ON, QB | 351 |
| 661 | John, James | O'Hara | 1886 | ON | 272 |
| 187 | John, James | O'Hara | 1807 | IR, ? | ANTRIM, ? | 099 |
| 245 | John, James | O'Hara | 1807 | QB | 665, 666 |
| 1075 | John, James, Patrick | O'Hara | 1830, 1880 | AS | IRELAND ? | 420 |
| 159 | John, Joannes | O'Hara, O'Harah | 1842-07-10, 1843 ?, 1850?, 1880, 1888, 1893 | NY | IRELAND, GALWAY | 374, 986, 1 0 6 1, 1 0 6 2, 1 0 6 3 |
| 2747 | John, Joseph, J. | O'Hara | 1889-01-24;1895 ?; 1963-01 | NY, NJ | 1 2 0 1, 1 2 0 2, 1 2 0 3, 1 2 0 5, 1 2 0 6, |
| 1798 | John, Keith | O'Hara | 786 |
| 2271 | John, L. | O'Hara | 1882?, 1884, 1920, 1930 | OH | 984, 1 0 6 4, 1 0 6 5, 1 0 6 6, |
| 1412 | John, M. | O'Hara | 1805, 1831, 1850 | CN, PA, MO, IL | 605 |
| 579 | John, Marcus | O'Hara | IL, PA ? | 178 |
| 1418 | John, Marcus | O'Hara | 1840s | MO, IL | 605 |
| 896 | John, Michael | O'Hara | 1952, 1956 | CA, OR | 317 |
| 1154 | John, Michael | O'Hara | 1865-07-05; 1888-07-04; 1942-04-15 | MA | 701, 704 |
| 1011 | John, P. | O'Hara | 1938, 1940, 1969 | MI | 370, 381?, 382? |
| 1073 | John, Patrick | O'Hara | 1830,1880 | AS | IRELAND | 420 |
| 1124 | John, Patrick | O'Hara | NY | IRELAND ? | 452 |
| 434 | John, Patrick | O'Hara | MA | 118, 827 |
| 437 | John, Patrick | O'Hara | US | LIMERICK | 236 |
| 972 | John, Patrick | O'Hara | IA | 358 |
| 224 | John, Patrick | O'Hara | MAYO | 485 |
| 225 | John, Patrick | O'Hara | 1940 | MA | 049, 086, 827 |
| 1372 | John, Patrick, P. | O'Hara | 1897-3 ?; 1900 ? | MA | 588, 827, 1 1 9 6, 1 2 0 0, |
| 894 | John, Robert | O'Hara | 1952, 1956 | CA, OR | 317 |
| 292 | John, Shane | O'Hara | 1500+ | IR | ANTRIM | 069 |
| 1568 | John, Sr. | O'Hara | IR ? | DERRY | 701, 704 |
| 1681 | John, Terrance | O'Hara | 1879, 1882, 1927 | NY | 754 |
| 2134 | John, Thomas | O'Hara | 1920-03-24; 1999-11-02 | CT, TX | 890, 980 |
| 1182 | John, Victor | O'Hara | 1913-02-10; 1988-03-21 | NE, IA | 496 |
| 870 | John, W. | O'Hara | 1855-03, 1930 | IN, WA | 673 |
| 589 | John, Watson . | O'Hara | 1920 | QB, PE, MA | 183 |
| 2019 | John, William | O'Hara | 1873, 1947 | PA, NY | 835 |
| 1817 | John, Wyane | O'Hara | 786 |
| 1621 | Johnny | O'Hara | 1925-1934-02-29 | NY | 708 |
| 1161 | Joselynn | O'Hara | NB | 493 |
| 1072 | Joseph | O'Hara | 1900, 1910 ? | NY | 409, 413 |
| 228 | Joseph | O'Hara | 1898 | IA | 251, 252 |
| 266 | Joseph | O'Hara | 1867-05-20 | AU | 057 |
| 543 | Joseph | O'Hara | 1900-07-21 | MN, ME, NY | 163 |
| 2343 | Joseph | O'Hara | 1899-08-23; 1983-09 | PA | 983 |
| 572 | Joseph | O'Hara | 1900 | US | SCOTLAND | 176, 177 |
| 1088 | Joseph | O'Hara | 1874-10 | IR | ANTRIM | 423 |
| 1098 | Joseph | O'Hara | 1868, 1922 | IR, EN | CLARE | 432 |
| 1359 | Joseph | O'Hara | NY | 582 |
| 83 | Joseph | O'Hara | PA | 021 |
| 2393 | Joseph | O'Hara | 1869?, 1870, 1880, 1890, 1891 | LA | 1 0 2 4, 1 0 2 7, 1 0 2 8, |
| 2394 | Joseph | O'Hara | 1833 ?, 1870, | NS, LA | 1 0 2 7, 1 0 2 8 |
| 603 | Joseph | O'Hara, O'Hora | 1920 | PA, NY | 184 |
| 118 | Joseph | O'Hara | 1863 | ON | 239 |
| 902 | Joseph | O'Hara | LA | 320, 1 0 0 7, |
| 649 | Joseph | O'Hara | 1863 | ON | 238 |
| 917 | Joseph | O'Hara | US | 324 |
| 2715 | Joseph | O'Hara | 1850 ? | 1 1 8 9, |
| 1962 | Joseph | O'Hara | 1794, 1879-04-18 | IR | CAVAN | 819 |
| 1970 | Joseph | O'Hara | 1845 | IR | DUBLIN ? | 820, 823 |
| 196 | Joseph | O'Harrah | 1860-08-08 | OH | 046 |
| 2256 | Joseph | O'Hara | 1891 | NY | 961 |
| 213 | Joseph | Harra | 1840 | PA | 071 |
| 214 | Joseph | O'Hara | 1830 | PA | 071 |
| 2522 | Joseph | O'Hara | 1853, 1860+ | NY | 1 0 8 2, |
| 238 | Joseph | O'Hara | 1863 | ON | 228, 666 |
| 762 | Joseph | O'Hara | NJ | 257, 171, 182 |
| 899 | Joseph, A., Big Daddy | O'Hara | 1870-01, 1890-01-06,1894, 1920, 1930, 1936 | LA | 320, 1 0 0 7, 1 0 2 3, 1 0 2 4, 1 0 2 5, 1 0 2 6, 1 0 2 9, |
| 2305 | Joseph, Felix | O'Hara | 1890-05; 1900+ | MN | 981 |
| 2205 | Joseph, J. | O'Hara | 1873-04-17; 1881 | SL | 942, 955 |
| 399 | Joseph, Jerome | O'Hara | MO, TX, CA | 106 |
| 92 | Joseph, John | O'Hara | 1916-09-13 | ON | 216 |
| 658 | Joseph, Lawrence | O'Hara | 1891 | ON | 238 |
| 1375 | Joseph, Leo | O'Hara | 1879 | NY | 591 |
| 2131 | Joseph? | O'Hara | PA | 889 |
| 1978 | Josephine | O'Hara | 821 |
| 2247 | Josephine | O'Hara | 1899-08, 1930+ | IL | 959, 1 0 4 7, 1 0 4 8, 1 0 4 9, 1 0 5 0, |
| 1234 | Josephine | O'Hara | IL ? | 825 |
| 100 | Josephine, Rachel | O'Hara, Bender | 1864-06-10, 1885-10-14, 1902-02-12 | 149, 151, 152 |
| 760 | Josephine. | O'Hara | NY ? | 255 |
| 1749 | Joshua | O'Hara | 1882 | IA | 781 |
| 1024 | Julia | O'Hara, Kelly | c.1834, 1868-09-19, 1880+ | OH, IL, KS? | IRELAND | 373, 1 1 6 6, |
| 20 | Julia | O'Hara | 1845 | US | 004 |
| 2356 | Julia | Kelley, O'Hara | ND | 007 |
| 2625 | Julia | O'Hara | 1850s; 1860s?, | NY, EN | IRELAND | 1 1 0 0, 1 1 2 2, 1 1 2 4, 1 1 2 7, 1 1 2 8, 1 1 2 9, |
| 1876 | Julia | O'Hara | WI, MD ? | 797 |
| 1125 | Julia | Byrne, O'Hara | NY | IRELAND ? | 452 |
| 396 | Julia | Clear, O'Hara | 1858-10-15; 1940-04-02 | MN | 105, 981 |
| 2525 | Julia | O'Hara | 1858, 1870+ | NY | 1 0 8 4, 1 0 9 5, |
| 1276 | Julia | O'Hara | PA | 530 |
| 1742 | Julia, Edith | O'Hara | 1898 | ON | 770 |
| 2750 | Justin, Jay | O'Hara | NJ ? | 1 2 0 1, |
| 880 | Kane | O'Hara | 1790 ? | KY | IRELAND | 308 |
| 567 | Kane, Kean | O'Hara | 1820 | KY | 292, 293, 295 |
| 1029 | Kate | O'Hara | OH, PA | 376 |
| 804 | Kate | O'Hara | 1861 | ON, SK ? | 282, 287 |
| 2170 | Kate | O'Hara ? | NS, ON ? | 925 |
| 134 | Kate | O'Hara | PA | 034 |
| 691 | Kate | Moran, O'Hara, O'Hare ? | 1876 | RI | 218 |
| 2752 | Kate | O'Hara | 1845, 1860+ | PA | 1 2 1 0, |
| 2536 | Kate | O'Hara | c. 1833, 1860 | IL | IRELAND | 1 0 8 8, 1 0 9 1, |
| 546 | Kate, Ellen | Coffey, O'Hara | 1900-07-21 | ME, NY | 163 |
| 2479 | Katherene | O'Hara | 1875, 1930 | OH | 1 0 6 4, |
| 586 | Katherine | O'Hara | MA | 179 |
| 1907 | Katherine | O'Hara, Norton | 1864-01-01; 1945-08-26 | NY | 804 |
| 1927 | Katherine | Emerson, O'Hara | 1900; 1984-01 | NY | 804 |
| 790 | Katherine | O'Hara, McGuillan | IR, US ? | LEITRIM | 301 |
| 1055 | Katherine | Mannion, O'Hara | 1900 ? | NJ ? | MAYO | 391 |
| 320 | Katherine | O'Hara | 1937-01-30 | IR | MAYO | 483 |
| 1102 | Katherine | O'Hara | EN | 432 |
| 614 | Katherine | Croak, O'Hara | 1902 | PA | 185 |
| 141 | Katherine | Callahan, O'Hara | IRELAND | 044 |
| 405 | Katherine | Dieterich, O'Hara | CA ? | 106 |
| 1433 | Katherine | Mannion, O'Hara | 1900s | OH | SLIGO, MAYO | 626 |
| 1434 | Katherine | O'Hara | 1900s | OH, MA ? | SLIGO, MAYO | 626 |
| 1238 | Katherine | O'Hara | IR ? | MAYO | 517 |
| 1515 | Katherine | O'Connor, O'Hara | 1915 ? | CT | 643 |
| 2680 | Katherine, H. | O'Hara | c.1916, 1930+ | MO | 1 1 5 1, 1 1 5 7, |
| 314 | Katherine, Kathryn | Croak, O'Hara | 1902 ? | PA ? | 181, 719 |
| 769 | Katherine, Kit | Ford, O'Hara, O'Hayer | 1866 | IL | 266, 632 |
| 1766 | Katherine, Kitte | O'Hara | NY | 783 |
| 1508 | Katherine, Marie | O'Hara | 2000-04-28 | IL | 659 |
| 1617 | Kathleen | O'Hara | 1922-07-14; 1988-03-01 | NY | 708 |
| 1948 | Kathleen | O'Hara, Perez | 1957-01-29; 2003+ | NY | 804 |
| 168 | Kathleen | O'Hara | NY | 374 |
| 1800 | Kathleen | O'Hara, Campball | 786 |
| 1808 | Kathleen | O'Hara | 786 |
| 1818 | Kathleen | Agostini, O'Hara | 786 |
| 1825 | Kathleen | O'Hara | 786 |
| 1572 | Kathleen | O'Hara | MA | 701, 704 |
| 2664 | Kathleen | O'Hara | 1 1 4 3, |
| 153 | Kathleen | O'Hara | NY | 042 |
| 1497 | Kathleen | O'Hara | PA | 659 |
| 1737 | Kathleen, Amanda | O'Hara | 1887 | ON | 770 |
| 1079 | Kathleen, P. | O'Hara, Bernhard | 1908-03-13, 1929, 1931, 1964 | NY | ANTRIM | 423 |
| 2310 | Kathryn | McManammon, O'Hara | 1890 | PA ? | 981 |
| 1358 | Kathryn | O'Hara | WI ? | 598, 600 |
| 2673 | Kathryn | O'Hara | c. 1910, 1930+ | MO | 1 1 5 1, 1 1 5 7, |
| 741 | Kathryn | O'Hara | US? | 304 |
| 2582 | Katie | O'Hara | c. 1873, 1880 | MD, IL | 1 1 0 6, |
| 2723 | Katie | O'Hara | 1 1 9 0, |
| 2693 | Katie, Rose, Katy, Katie, Catherine, Katherine ?? | O'Hara, Fowler | c. 1870s, 1880s, 1903-10-14, 1907, 1910+ | NY, OR ? | CORK | 1 1 7 3, 1 1 7 4, 1 1 7 5, 1 1 7 6, 1 1 7 7, |
| 1163 | Katrina | O'Hara | NB | 493 |
| 1821 | Kevin | O'Hara | 786 |
| 1843 | Kevin | O'Hara | 786 |
| 1748 | Kevin, Rory | O'Hara | WA | 772, 773 |
| 1507 | Kevin, Thomas | O'Hara | 1997-10-23 | IL | 659 |
| 1164 | Krista | O'Hara | NB | 493 |
| 785 | L., S. | O'Hara | 1815 | II | 274 |
| 2526 | Lady | O'Hara | IR | SLIGO, MAYO, LEITRIM ? | 1 0 7 3, 1 0 7 5, 1 0 7 7, 1 0 7 8, 1 0 9 3, 1 0 9 6, 1 1 1 0, 1 1 2 2, 1 1 2 4, |
| 309 | Laura | Laura, Worral | 1800, 1900 | CN | 073 |
| 2359 | Laura, Ann | O'Hara | 1981?, 2001? | IR, FL | LIMERICK | 1 0 0 8, |
| 2112 | Laura, Jane | O'Hara, O'Haro, McCoy | 1867-09-03; 1887; 1951-09-22 | IN, IA ? | 949, 950, 956, (881) |
| 1942 | Laurie | Cervini, O'Hara | 1957-10-11; 1979-09-08; 2003+ | NY | 804 |
| 2698 | Lavinia, Louivina | O'Hara, O'Harra, Murphy | 1829?, 1850-06-12, 1880 | OH, IA, | 1 1 7 9, 1 1 8 2, 1 1 8 5, |
| 44 | Lawrence | O'Hara | DERRY | 568 |
| 1398 | Lawrence | O'Hara | 1831, 1891 | EN | 602 |
| 1656 | Lawrence | O'Hara | 1831 | EN | 734 |
| 943 | Lawrence | O'Hara | MO | 335 |
| 1249 | Lawrence | O'Hara | EN | 528, 764, 811 |
| 1400 | Lawrence (2) | O'Hara | 1891 | EN | 602 |
| 1493 | Lawrence, J. | O'Hora, O'Hara ? | PA | 659 |
| 1491 | Lawrence, J. | O'Hora, O'Hara ? | 1898-06-02; 1955-12-09 | PA | 659 |
| 1483 | Lawrence, J. | O'Hora, O'Hara ? | 1870, 1922 | PA | 659 |
| 62 | Lee | O'Hara, Mullenhoff | NY | 015, 014 |
| 535 | Lelan | O'Harra | 2004+ | 1 0 1 1, |
| 1626 | Lena | Brink, O'Hara | 1918, 1919, 1924 | PA | 721 |
| 2180 | Lena | Brink, O'Hara | 1914, 1918 ? | SL | 449, 933 |
| 1167 | Leo | O'Hara | 1910 | NS, NB | 493, 688 |
| 1427 | Leo | O'Hara | 1950s | ON | 607, 752 |
| 2177 | Leo, Henry | O'Hara | 1916 | NB, NS | 929 |
| 1979 | Levi | O'Hara | 821 |
| 1232 | Levi | O'Hara | IL ? | 825 |
| 1690 | Lilian | Buxton, O'Hara | EN | 760, 745 |
| 1562 | Lillian | O'Hara | MA ? | 701, 704 |
| 1129 | Lillian | O'Hara | NY | 452 |
| 1974 | Lillian | O'Hara, Engle | 1921 ?, >=2002 | MO | 821 |
| 1924 | Lillian, A. | O'Hara | 1881; 1955-04-21 | NY | 804 |
| 1826 | Linie, Caroline | Murray, O'Hara | 786 |
| 617 | Lionel | O'Hara | MA | 188 |
| 1004 | Lizzie | O'Hara, Jackson | 1850 | EN, CN | CORK | 367 |
| 1834 | Lloyd | O'Hara | 786 |
| 1070 | Loftus | O'Hara | 1900, 1910 ? | NY | 409, 413 |
| 2662 | Loretta | Nestle, O'Hara | 1 1 4 3, |
| 1928 | Loretta, H. | O'Hara | 1886; 1976-05-31 | NY | 804 |
| 1314 | Lorne | O'Hara | 2001 | ON | 684, 685 |
| 1922 | Louise | O'Hara, Doerbecker ? | NY | 804 |
| 1410 | Louise, Anna | Breennan, O'Hara | CA ? | 604 |
| 1068 | Lucille | O'Hara, McClarey | 1900, 1910 ? | NY | 409, 413 |
| 1443 | Lucille | Finley, O'Hara | 1937 ? | AR, IL, TX ? | 636 |
| 2056 | Lucille, Clara | Lingan, O'Hara | MD | 837 |
| 1145 | Lucretia | Darbee, O'Hara | 1808 | NY | 468 |
| 2332 | Luke | O'Hara | c. 1815 | IR ? | IRELAND | 994 |
| 301 | Lwayne | O'Harra | 1 0 1 1, |
| 557 | Lydia, Caldonia | Bedwell, O'Hara | 1884 ? | IL ? | 168 |
| 1324 | M-, Mrytle | Natz- ?, O'Hara | 1918-04-08 | MT | 562 |
| 840 | M., Jane | O'Hara | ON, PA | 305 |
| 2038 | Mabel | O'Hara | CT ? | 836, 1 0 0 6, 1 0 4 4, |
| 2043 | Mabel (2) | O'Hara | CT ? | 836, 1 0 0 6, 1 0 4 4, |
| 1592 | Mabel, Magdaline | Ballard, O'Hara | 1904-09-04 | MA | 701, 704 |
| 1354 | Madeline | O'Hara | WI ? | 598, 600 |
| 1890 | Madeline | O'Hara, Merriwether | PA | 799 |
| 1661 | Madge ? | O'Hara | PA | 741 |
| 1134 | Maggie | McDermott, O'Hara | 1892 | IR, SL | LEITRIM | 454 |
| 1449 | Maggie | O'Hara | IR, IA, MN ? | LIMERICK | 648 |
| 954 | Maggie | McDermott, O'Hara | 1892 | IR | LEITRIM | 795 |
| 2757 | Maggie | O'Hara | 1854, 1860+ | PA | 1 2 1 0, |
| 2716 | Malinda, Louise | O'Hara | 1850 ? | 1 1 8 9, |
| 2508 | Maraget, Margaret ? | O'Hara | 1850?, 1880 | PA, MO ? | 1 0 8 5, 1 0 8 6, |
| 2012 | Marah | O'Hara | 1856 ? | IRELAND | 835 |
| 843 | Marcellus | O'Hara | ON, PA, NJ ? | 298, 305 |
| 1172 | Marcus | O'Hara | KY | 495, 637 |
| 1616 | Margaret | O'Hara | 1916, 1924-10-07; 98-10-11 | NY | 708 |
| 423 | Margaret | O'Hara | 1867 | CN, NY | 115 |
| 1469 | Margaret | O'Hara | 1859 ?, 1860 | KY, OH | 657 |
| 1027 | Margaret | O'Hara | OH, PA | 376 |
| 2052 | Margaret | O'Hara, Costello | 1872 | MD | IRELAND | 837 |
| 1031 | Margaret | O'Hara | OH?, PA?, CA | 463 |
| 777 | Margaret | O'Hara | IR ? | SLIGO | 334 |
| 2313 | Margaret | O'Hara | 1894 | PA ? | 891 |
| 2314 | Margaret | O'Hara | 1894 | PA ? | 891 |
| 529 | Margaret | O'Hara | NY | 161, 154 |
| 1556 | Margaret | Duddy, O'Dowd, O'Hara | 1850s, 1899 | PA, MA | DERRY | 701, 704, 717 |
| 1557 | Margaret | Noonan, O'Hara | IR ? | DERRY | 701, 704 |
| 2333 | Margaret | Sorley, O'Hara | IR ?, SL ? | IRELAND ? | 994 |
| 1822 | Margaret | O'Hara | 786 |
| 2336 | Margaret | O'Hara | SL | 994 |
| 2340 | Margaret | Carney, O'Hara | c. 1893 | PA | 983 |
| 1573 | Margaret | O'Hara | 1860s | MA | DERRY ? | 701, 704 |
| 294 | Margaret | MacDuffy, O'Hara | 1600+ | IR | ANTRIM | 069 |
| 2089 | Margaret | Tweddle, O'Hara | 1870 | EN | 866 |
| 2345 | Margaret | O'Hara | c. 1903; c. 1961 | PA, EN | 983 |
| 1329 | Margaret | O'Hara | ON | 562, 824 |
| 1585 | Margaret | Seix, O'Hara | 1897-05-09 | MA | 701, 704 |
| 1586 | Margaret | O'Hara | MA | 701, 704 |
| 2099 | Margaret | O'Hara, Burns, Young | 1877-09-07; 1900-02-28; 1942-12-21 | ON | 558, 644, 884, 910, 923, 938, 1 0 0 1, 1 0 3 1, |
| 2355 | Margaret | O'Hara, Moran, Jones | c. 1841, 1880 | MA, CA | IRELAND | 998 |
| 57 | Margaret | McMahon, O'Hara | NY | CAVAN | 014, 015 |
| 1338 | Margaret | O'Hara | 1838-09-06 | IR | LIMERICK | 735 |
| 1084 | Margaret | O'Hara | 1861-05 | IR | ANTRIM | 423 |
| 1340 | Margaret | Scanlan, O'Hara | 1838 | IR | LIMERICK | 735 |
| 1858 | Margaret | O'Hara | PA ? | 794 |
| 1348 | Margaret | O'Hara | 1850? | NY | IRELAND | 581 |
| 838 | Margaret | O'Hara | ON, PA ? | 305 |
| 1096 | Margaret | O'Hara | 1865, 1868 | IR, EN | CLARE | 432 |
| 2632 | Margaret | O'Hara | 1860?, | GA | 1 2 3 2, |
| 1099 | Margaret | O'Hara | EN | 432 |
| 2125 | Margaret | O'Hara | PA | 889 |
| 1614 | Margaret | Shine, O'Hara | 1892 ?, 1916 ?, 1958 | NY | CORK | 708 |
| 2383 | Margaret | Bradley, O'Hara | 1886, 1900 | PA | 1 0 1 7, 1 0 1 8, |
| 1873 | Margaret | Brown, O'Hara | 1812 ? | MD, KY, IL | IRELAND | 797, 870 |
| 1107 | Margaret | O'Hora, O'Hara | 1850, 1880 ? | NY | 436 |
| 345 | Margaret | O'Hara | 1867 | NY | 114 |
| 2138 | Margaret | Caine, O'Hara | ON | 896, 898 |
| 1885 | Margaret | O'Hara, McGuire | MD, PA | 870 |
| 1121 | Margaret | O'Hara, O'Hare | 1841 | OH ? | 439 |
| 1130 | Margaret | O'Hara | NY | 452 |
| 114 | Margaret | O'Hara | 1852 | ON | 239 |
| 2434 | Margaret | O'Hara | 1870, 1880+ | CT | 1 0 4 1, 1 0 4 2, |
| 644 | Margaret | O'Hara | 1852, 1933 | ON | 238 |
| 398 | Margaret | L'Huillier, O'Hara | 1880, 1900 | MO, TX, CA | 106 |
| 2456 | Margaret | O'Hara | 1857 | EN, AU | 1 0 5 7, |
| 926 | Margaret | Elliott, O'Hara | SL | IRELAND | 464 |
| 2463 | Margaret | O'Hara | 1825-07-26 | SL | CAVAN | 1 0 5 7, |
| 928 | Margaret | O'Hara | SL | 464 |
| 1957 | Margaret | O'Hara | 1927?, 2002+ | PA | 813 |
| 2216 | Margaret | O'Hara | 1891, 1909+ | IR, US | SLIGO | 948 |
| 1454 | Margaret | O'Hara | 1850 ? | NY | MAYO ? | 650 |
| 945 | Margaret | O'Hara, Wilson | MO | 335 |
| 180 | Margaret | Innes, O'Hara | IR | ANTRIM | 039 |
| 1719 | Margaret | Nagle, O'Hara | 1965 | PA | IRELAND | 765 |
| 1723 | Margaret | O'Hara | PA | 765 |
| 2491 | Margaret | O'Hara | 1874?, 1880, | PA | 1 0 7 0, |
| 194 | Margaret | O'Harrah | 1860-08-08 | OH | 046 |
| 962 | Margaret | Foy, O'Hara | 1877, 1894, 1895 | IR, EN | MAYO ? | 343, 469, 570, 695, 697 |
| 2758 | Margaret | O'Hara | 1826, 1860+ | PA | 1 2 1 0, |
| 969 | Margaret | O'Hara, Waldron | 1857 | PA | 355, 1 2 0 8, 1 2 0 9, 1 2 1 0 ?, |
| 2516 | Margaret | O'Hara | 1855, 1860+ | NY | 1 0 8 2, |
| 2273 | Margaret | O'Hara | OH | 984 |
| 241 | Margaret | O'Hara | ON | 228, 666 |
| 1274 | Margaret | O'Hara | 1885 | PA | 530 |
| 2299 | Margaret | O'Hara | 1868, 1884 | PA | 981 |
| 2300 | Margaret | Hart, O'Hara | 1854 | PA | 981 |
| 2301 | Margaret | O'Hara | 1883 | PA | 981 |
| 767 | Margaret | McKiernan, O'Hara | 1826, 1896 | IR | MAYO, DERRY, DOWN ? | 263 |
| 446 | Margaret (1) | O'Hara | ON | 123 |
| 447 | Margaret (2) | O'Hara | 1845-04-11 | ON ?, II | 123 |
| 444 | Margaret (3) | O'Hara | ON | 123 |
| 390 | Margaret ? | O'Hara | US | 122 |
| 1423 | Margaret, Anne | Graham, O'Hara | ON | 607, 752 |
| 1563 | Margaret, E. | McMahon, O'Hara | 1888-07-04 | MA | 701, 704 |
| 1300 | Margaret, Edith | Kerr, O'Hara, O'Hare ? | 1860 | AU | 557 |
| 1461 | Margaret, Maggie | Milford, O'Hara | 1866 | ON | 656 |
| 2192 | Margaret, Mary | O'Hara, Carroll | 1850, 1866 | NE, IL | KILKENNY ? | 937, 1 0 0 0, |
| 1965 | Margaret, Mary | Kellett, O'Hara | IR ? | 819 |
| 2050 | Margaret, Peggy | Hughes, O'Hara | 1872 | MD | MAYO | 837 |
| 60 | Margaret, Peggy | O'Hara, Grogan | NY | 015, 014 |
| 1882 | Margaret, Sr. | O'Hara | 1812 ? | MD | IRELAND | 870, 797, 869 |
| 1886 | Margery | O'Hara, Daugherty | MD | 870 |
| 2730 | Margery | O'Hara, Dougerty | 1 1 9 0, |
| 2620 | Margreth | O'Hara | 1829, 1870, | IL | IRELAND | 1 1 0 4, |
| 778 | Maria | Sykes, O'Hara | EN | 334 |
| 2156 | Maria | McDonald, O'Hara | ON | 926 |
| 938 | Maria | Kane, O'Hara | 1890-06-26 | PA | 339, 341 |
| 480 | Maria | O'Hara | SLIGO | 143 |
| 2533 | Maria | Naughten, O'Hara | 1833 | IR | SLIGO | 1 1 5 3, |
| 489 | Maria | O'Hara | IR | SLIGO ? | 535, 653 |
| 2402 | Maria, Mariah | O'Harra | 1832?, 1835?, 1880+ | NY | 1 0 3 6, 1 0 3 7, 1 0 3 8, |
| 2243 | Maria, Sophia | Dobbs ?, O'Hara | 1876 | ON | 958 |
| 1219 | Marian | Murray, O'Hara | 1822, 1826, 1869, 1871 | ON | ENGLAND | 516 |
| 1220 | Marian | O'Hara | 1832 | ON ? | ENGLAND ? | 516 |
| 2245 | Marian | Murray, O'Hara | ON ? | 958 |
| 1131 | Marian, Agatha | O'Hara, Rice | 1853-06-09 | 453 |
| 1486 | Marie | O'Hora, O'Hara ? | PA | 659 |
| 924 | Marie | Fiske, O'Hara ? | 326 |
| 687 | Marie | O'Hara | 1855 | NY | 214 |
| 1809 | Marielle | Wilhelmie, O'Hara | 786 |
| 2665 | Marilyn | O'Hara | 1 1 4 3, |
| 1932 | Marion | O'Hara | NY | 804 |
| 1795 | Marion | O'Hara, Birkett | 786 |
| 786 | Marion | O'Hara, Murray | 1909, 1927 | ND | 278 |
| 1829 | Marion | O'Hara | 786 |
| 2650 | Marion | O'Hara | 1 1 4 1, |
| 2416 | Marion | O'Harra | 1860?, 1870+ | NY | 1 0 3 7, |
| 1137 | Marion | O'Hara | 1909-07-09; 1979-02-10 | ND | 457 |
| 836 | Mark | O'Hara | ON, PA? | 305 |
| 388 | Mark ? | O'Hara | US | 122 |
| 48 | Martha | Burt, O'Hara | 1850 | NY | 107 |
| 1906 | Martha | Toole, O'Hara | 1901-05-10 | NY | 804 |
| 422 | Martha | O'Hara | 1867 | CN, NY | 115 |
| 522 | Martha | Mc'Cann, McCann | 1868, 1886-10-29 | SL | 625 |
| 1342 | Martha | Miller, O'Hara | 1847 | IR | ANTRIM | 575 |
| 723 | Martha | O'Harrah | 1850 | PA | 241 |
| 1271 | Martha | Finney, O'Hara | 1908 | EN | 529 |
| 1417 | Martha, Price | O'Hara | 1840s | MO, IL | 605 |
| 578 | Martha, Price | O'Hara | IL, PA ? | 178 |
| 344 | Martha? | O'Hara | 1867 | NY | 114 |
| 2640 | Martin | O'Hara | 1850 ?, | ON ?, MI ?, NY | LEITRIM, MAYO ? | 1 1 0 1, |
| 2054 | Martin | O'Hara | 1872 | MD | IRELAND | 837 |
| 2075 | Martin | O'Hara | NY | 847 |
| 540 | Martin | O'Hara, Ohara | 1894-10-23 | ME | 159 |
| 1319 | Martin | O'Hara | 1880-05-04 | NY, TX | DUBLIN | 561 |
| 2366 | Martin | O'Hara | 1860, 1886, 1900 | PA | 1 0 0 9, 1 0 1 7, 1 0 1 8, |
| 2113 | Martin | O'Hara | 1887, 1950s | PA | MAYO | 885, 889, 943 |
| 1119 | Martin | O'Hara, O'Hare | 1808 | PA, OH ? | 439 |
| 2149 | Martin | O'Hara | 1931 | NY ? | MAYO | 897 |
| 1685 | Martin | O'Hara | 1865 | EN | 777 |
| 1440 | Martin | O'Hara | CA ? | MAYO ? | 671 |
| 2471 | Martin | O'Hara | 1821, 1850 | NY | IRELAND | 1 0 5 8, |
| 1207 | Martin | O'Hara | 1858 ? | WI | 502 |
| 961 | Martin | O'Hara | 1875, 1894, 1907 | IR, EN | MAYO | 343, 469, 570, 695, 697 |
| 2499 | Martin | O'Hara | 1849 | NY | 1 0 7 2, 1 0 8 3, 1 0 9 3, 1 1 0 0, 1 1 2 1, 1 1 2 2, |
| 252 | Martin | O'Hara | 1855 | NY, WI | 053, 510 |
| 2121 | Martin (2) | O'Hara | PA | 889 |
| 2486 | Martin, F. | O'Hara | 1866?, 1880, | PA | 1 0 7 0, |
| 49 | Mary | O'Hara | 1850 | NY | 107 |
| 1285 | Mary | O'Hara | 1861 ?, 1881 | SL | 538, 539 |
| 1304 | Mary | O'Hara | 1877-09-07, 1881+ | ON | 558, 644, 910, 884, 923, 1 0 0 1, 1 0 3 1, |
| 1083 | Mary | Henderson, O'Hara | 1861-05; 1880-05 | IR | ANTRIM | 423 |
| 582 | Mary | O'Hara | MA | 179 |
| 1166 | Mary | O'Hara | 1910 | NS, NB | 493, 688 |
| 740 | Mary | O'Hara | US ? | 304 |
| 1267 | Mary | O'Hara | 1851 ?, 1871 | EN | 759, 811 |
| 258 | Mary | Barton, O'Hara | 1852, 1867 | AU | SCOTLAND | 057, 157 |
| 514 | Mary | O'Hara, Carroll | 1933 | IR | ANTRIM | 706, 709, 947? |
| 2051 | Mary | O'Hara, Moran | 1872 | MD | MAYO | 837 |
| 2311 | Mary | O'Hara | 1891 | PA ? | 981 |
| 8 | Mary | McElroy, O'Hara | 1845 | IA | CAVAN | 004 |
| 2057 | Mary | O'Hara | MD | 837 |
| 783 | Mary | O'Hara | 1810-11-03 | II | 274 |
| 528 | Mary | Kelley, O'Hara | NY | 161, 154 |
| 17 | Mary | O'Hara | 1845 | US | CAVAN | 004 |
| 531 | Mary | O'Hara | 1835, 1865, 1870 | 156 |
| 21 | Mary | Anthony, O'Hara | IN | 001, 081 |
| 22 | Mary | Hara | 1891-02-23 | DERRY | 017 |
| 1046 | Mary | O'Hara | 1880-12-22; 1919-03-02; 1973-10-13 | SL, NJ | SCOTLAND | 386, 451 |
| 25 | Mary | Hara, Ferson | NJ | DERRY | 005 |
| 2329 | Mary | O'Hara | 1904-04-30 | MA | 993 |
| 282 | Mary | Sullivan, O'Hara | 1868, 1884 | EN | 743, 744, 745, 760, 748 |
| 1819 | Mary | Schrenders, O'Hara | 786 |
| 1564 | Mary | O'Hara | MA | 701, 704 |
| 285 | Mary | O'Hara | 1875 | EN | 743, 744, 745, 760, 748, 817 |
| 2077 | Mary | O'Hara, McWilliams | NY | ANTRIM | 894 |
| 800 | Mary | O'Hara | 1855 | ON, SK ? | 282, 287 |
| 1060 | Mary | O'Hara | 1845+ | IR | ANTRIM | 394, 612 |
| 2596 | Mary | O'Hara | 1854, 1870 | IL | IRELAND | 1 1 0 5, |
| 2087 | Mary | O'Hara, Quigley | 1816 | SL, AU | SCOTLAND | 868 |
| 2092 | Mary | O'Hara | 1930 | OK, PA, IL | 867 |
| 304 | Mary | O'Hara | WI | 072 |
| 817 | Mary | Laverty, O'Hara | 1854 | IR | ANTRIM | 290, 319 |
| 2609 | Mary | O'Harra | 1838, 1870, | IL | IRELAND | 1 1 0 4, |
| 2357 | Mary | O'Hara | IR | LEITRIM | 1 0 0 2, 1 0 0 3, 1 0 0 5, |
| 827 | Mary | Langan, O'Hara | 1832-06-07, 1848, 1851, 1922-08-17 | NY, MI | MAYO | 297 |
| 574 | Mary | Melsom, O'Hara | 1831, 1848 | PA, IL | 178 |
| 2110 | Mary | Conley?, Crofton?, O'Hara, O'Harrow | 1825; 1842-04-19 | OH, IN ? | 881, 950, 956 |
| 1087 | Mary | O'Hara | 1871-09 | IR | ANTRIM | 423 |
| 64 | Mary | O'Hara, Hayes | 1854, 1877 | NY | 016 |
| 1600 | Mary | O'Hara | 1828 | EN ? | 707 |
| 1856 | Mary | Brennen, O'Hara | PA ? | 794 |
| 66 | Mary | O'Hara | 1854 | NY | 016 |
| 837 | Mary | O'Hara | ON, PA | 305 |
| 2630 | Mary | O'Hara | 1860 ?, | GA | 1 2 3 2, |
| 2379 | Mary | Nolan, O'Hara | 1897, 1899 | 1 0 1 5, 636 |
| 2635 | Mary | O'Harrah, O'Hara | c. 1790, 1850 | ON ?,MI?, NY | LEITRIM, MAYO ? | 1 1 0 1, 1 1 2 2, 1 1 2 4, 1 1 2 6, |
| 1104 | Mary | Quinn, O'Hora, O'Hara | 1850, 1880 | NY | IRELAND | 436 |
| 1360 | Mary | Maloney, O'Hara | NY | 582 |
| 1106 | Mary | O'Hora, O'Hara | 1850, 1880 ? | NY | 436 |
| 2130 | Mary | O'Hara | PA | 889 |
| 2642 | Mary | O'Hara | 1828-07-10 | ON | 1 1 3 9, |
| 2644 | Mary | Healy, O'Hara | 1828, 1831+ | ON | 1 1 3 9, 1 1 5 6, |
| 341 | Mary | O'Hara | NY | IRELAND | 114 |
| 1371 | Mary | McGrail, McGreal, O'Hara | 1888 | MA | 588, 827, 1 1 9 6, 1 2 0 0, |
| 1117 | Mary | O'Hara, O'Hare | 1800 | PA, OH ? | 439 |
| 95 | Mary | O'Hara, Nealon | 1845, 1868 | PA, VA, DC | MAYO | 024 |
| 1120 | Mary | Cowan, O'Hara, O'Hare | 1841, 1847 | OH ? | 439 |
| 2144 | Mary | O'Hara | 1837 | IR | ANTRIM, DERRY | 895 |
| 1889 | Mary | O'Hara, Doyle | PA | 799 |
| 2148 | Mary | O'Hara | 1931 | IR | MAYO | 897 |
| 2151 | Mary | O'Hara, Collins | 1931 | NY ? | MAYO | 897 |
| 1128 | Mary | O'Hara | NY | 452 |
| 1641 | Mary | O'Hara | PA | 728, 724 |
| 1897 | Mary | O'Hara, Connaughton | 1844, 1851, 1920-03-20 | NY | LEITRIM | 804 |
| 1396 | Mary | O'Hara, McCaffrey | IRELAND | 597 |
| 373 | Mary | O'Hara, Shannon | 1850, 1870, 1880 | IR, PA, IL | MAYO | 098 |
| 375 | Mary | Marren, O'Hara | 1850, 1870, 1880 | IR, PA, IL | MAYO | 098 |
| 2424 | Mary | O'Hara | 1815?,1819?, 1823?, 1880+ | CT | IRELAND | 1 0 3 9, 1 0 4 0, 1 0 4 1, 1 0 4 2, |
| 121 | Mary | Howley, O'Hara | 1860 | PA | 033 |
| 2426 | Mary | O'Hara | 1841, 1842?, 1849 ?, 1870+ | CT | IRELAND | 1 0 3 9, 1 0 4 0, 1 0 4 1, |
| 379 | Mary | Gilmartin, O'Hara | 1890 | PA | SLIGO, MAYO | 133 |
| 1404 | Mary | O'Hara | EN | 602 |
| 1663 | Mary | Wilson, O'Hara | EN | 760, 780, 745 |
| 640 | Mary | Edge, O'Hara | 1822, 1823, 1904 | ON | IRELAND | 228, 238, 504, 505, 666 |
| 1152 | Mary | O'Hara, Kelly | 1880, 1937 ? | PA | IRELAND | 487 |
| 2178 | Mary | White, O'Hara | NB, NS | 929 |
| 1668 | Mary | Monahan, O'Hara | IR | MAYO ? | 778 |
| 1413 | Mary | Melsom, O'Hara | 1831, 1850 | PA, MO, IL | 605 |
| 1671 | Mary | O'Hara, DeLaHunte, Dillahunty | 1698, c. 1715 | IR, MD | IRELAND | 749 |
| 136 | Mary | O'Hara | 1845 | PA | MAYO | 036 |
| 906 | Mary | Churchwood, O'Hara | 1824, 1851-09-21, 1857 | EN, NZ | ENGLAND | 323 |
| 910 | Mary | O'Hara, Yakubec | 1919 | US | 324 |
| 1679 | Mary | Frawley, O'Hara | 1900 | NY | 751 |
| 2703 | Mary | O'Hara | 2004+ | IR | TYRONE | 1 1 8 8, |
| 2453 | Mary | Foy, O'Hara | 1850-07-29; 1874+ | EN, AU | 1 0 5 7, |
| 406 | Mary | O'Hara, Nealon | 1868, 1875 | PA | MAYO | 108 |
| 151 | Mary | Quinlan, O'Hara | c.1860, 1880, 1888, 1891, | NY | 042, 986, 1 0 6 2, |
| 408 | Mary | Duffy, O'Hara | IR | MAYO | 108 |
| 2200 | Mary | O'Hara | 1864-09-27 | SL | 942 |
| 1436 | Mary | O'Hara, Anderson | 1902 | NY | LEITRIM | 629 |
| 1693 | Mary | O'Hara | NY | 815 |
| 2207 | Mary | Coll, O'Hara | 1900-12-31 | SL | 942 |
| 1698 | Mary | O'Hara | OK ? | 815 |
| 419 | Mary | O'Hara | 1831 | CN, NY | IRELAND | 115 |
| 932 | Mary | O'Hara, McAnully | 357 |
| 2214 | Mary | Hegarty, O'Hara | 1889, 1891 | IR | SLIGO | 948 |
| 681 | Mary | Finley, O'Hara | 1885 | NY | SLIGO | 261 |
| 1705 | Mary | O'Hara | PA | 762 |
| 1451 | Mary | Quinn, O'Hara | 1850 ? | NY | MAYO | 650 |
| 173 | Mary | O'Hara, Blair | OH, WI, IA | 038 |
| 1453 | Mary | O'Hara | 1850 ? | NY | MAYO ? | 650 |
| 433 | Mary | McCrail, MCGreal, O'Hara | 1888 | MA | 118 |
| 2485 | Mary | O'Hara | 1880 | PA | 1 0 7 0, |
| 2741 | Mary | Quigley, O'Hara | 1877-03-02 | MA | IRELAND ? | 1 1 9 9, |
| 950 | Mary | O'Hara, McDermott | 1891-04-22 | US | IRELAND | 342 |
| 952 | Mary | Boylan, O'Hara | IR | LEITRIM | 342, 383, 795 |
| 1208 | Mary | O'Hara | 1858 ? | WI | 502 |
| 1721 | Mary | O'Hara | PA | 765 |
| 1210 | Mary | Corr, Cork ?, O'Hara | 1828 | 761 |
| 1467 | Mary | O'Hara | 1855 ?, 1860 | OH | 657 |
| 1212 | Mary | O'Hara, Barrett | 1857-02-24 | WI, OH | KERRY | 565 |
| 1733 | Mary | Pelch, O'Hara | ON | 770 |
| 1991 | Mary | Fitzsimmons, O'Hara | PA | 830 |
| 713 | Mary | O'Hara, Anderson | MA ? | LEITRIM | 234, 109 |
| 1225 | Mary | O'Hara | ON ? | ENGLAND ? | 516 |
| 2254 | Mary | O'Hara | 1884 | NY | 961 |
| 463 | Mary | O'Hara, Higgins | 1855-10-18 | NY | IRELAND | 139 |
| 719 | Mary | O'Harrah | 1840 | PA | 241 |
| 2514 | Mary | O'Hara | 1833, 1860 | NY | IRELAND | 1 0 8 2, |
| 1237 | Mary | O'Hara | IR ? | MAYO | 517 |
| 2261 | Mary | O'Melia, O'Hara | 1848 | CN | IRELAND | 968 |
| 984 | Mary | Cockrin, O'Hara | 1812, 1837, 1840s, 1851 | ON | IRELAND | 766, 767, 769, 770 |
| 2520 | Mary | O'Hara | 1822, 1860+ | NY | IRELAND | 1 0 8 2, |
| 2524 | Mary | O'Hara | 1829, 1860+ | NY | IRELAND | 1 0 8 2, |
| 1245 | Mary | Deegan, Duggan, O'Hara | 1917 | PA | 527, 593, 594 |
| 734 | Mary | O'Hara | 1848, 1864 | US ? | CORK | 242, 291 |
| 1246 | Mary | O'Hara, Dugan | 1869 | NJ | 593, 527, 594 |
| 1758 | Mary | O'Hara | 1867, 1906 | NY | 783 |
| 2528 | Mary | O'Hara | 1760s ? | IR | DERRY ? | 1 1 1 4, |
| 227 | Mary | Daly, O'Hara | 1898 | IA | 251, 252 |
| 1254 | Mary | O'Hara | EN | 528, 764, 811 |
| 743 | Mary | Ryan, O'Hara | 1828-10-15 | IR | 250 |
| 2024 | Mary | Gilligan, O'Hara | 1819, 1841 | CT | IRELAND | 836, 1 0 0 6, 1 0 4 4, |
| 745 | Mary | Kennedy, O'Hara | CN, NY ? | 250 |
| 747 | Mary | Cleary, O'Hara | NY | IRELAND ? | 247, 242 |
| 1260 | Mary | O'Hara | 1871, 1881 | EN | 764 |
| 2030 | Mary | O'Hara, Gardener | 1841 | CT | IRELAND | 836, 1 0 0 6, 1 0 4 4, |
| 504 | Mary | O'Hara, Fox | 1850-08, 1868, 1878-12-26, 1918-09-13 | PA | MAYO | 146 |
| 2297 | Mary | O'Hara | 1862 | PA | 981 |
| 1533 | Mary | Morgan, O'Hara | 1823-11-23 | IR | DOWN | 690 |
| 254 | Mary | O'Hara, Knight | 1850, 1855, 1884 | NY, WI | 053, 510 |
| 2492 | Mary (2) | O'Hara | 1875, 1880 | PA | 1 0 7 0, |
| 2321 | Mary (5) | O'Hara | 1911, 1945 | MN | 981 |
| 389 | Mary ? | O'Hara | US | 122 |
| 1074 | Mary Anne | Duffy, O'Hara | 1830, 1880 | AS | IRELAND | 420 |
| 157 | Mary Maria ? | Gaven ?,O'Hara, O'Harah | c. 1821, 1842, 1880, 1894-06-27 | NY | IRELAND, GALWAY ? | 374, 986, 1 0 6 1, 1 0 6 3, |
| 889 | Mary, Ann | O'Hara | 1851 ? | IR, SL | ANTRIM | 309 |
| 1926 | Mary, A. | Bussey, O'Hara | 1872; 1939-10-17 | NY | 804 |
| 2465 | Mary, A. ? | O'Hara | 1810?, 1814, 1819, 1870 | NY | IRELAND | 1 0 5 8, 1 0 5 9, 1 0 6 0, |
| 218 | Mary, Adeline | Smith, O'Harrow | 1867-04-14 | OH | 047, 551 |
| 1684 | Mary, Alice | O'Hara, Dinning | 1861, 1871, 1881 | EN | 777 |
| 2010 | Mary, Alice | Calley, Lotus, O'Hara | PA, NY ? | IRELAND | 835 |
| 2080 | Mary, Alma | O'Hara | NY | 894 |
| 518 | Mary, Ann | O'Hara | 1860-01-26 | SL | 180 |
| 310 | Mary, Ann | O'Hara ?, Near | 1842 | US, ON | 641 |
| 2614 | Mary, Ann | O'Hara | 1854, 1870, | NY, IL | 1 1 0 4, |
| 1335 | Mary, Ann | O'Hara, Tracy | 1848-06-04 ?; 1850-05 ?; 1873-07-27; 1906-04-16 | IR, MN, IA ? | LIMERICK | 574, 577, 648, 669, 735 |
| 1097 | Mary, Ann | O'Hara | IR, EN | CLARE | 432 |
| 1384 | Mary, Ann | O'Hara | IR, SL | ANTRIM | 592 |
| 1399 | Mary, Ann | O'Hara | EN | 602 |
| 895 | Mary, Ann | McClintic, O'Hara | 1952, 1956 | CA, OR | 317 |
| 2184 | Mary, Ann | O'Hara | c. 1851 | NY | 932 |
| 2455 | Mary, Ann | O'Hara | 1855 | EN, AU | 1 0 5 7, |
| 949 | Mary, Ann | O'Hara ?, Near | 1842 ?, 1870, 1885 | PA, MO, ON | 337 |
| 2265 | Mary, Ann | Boyle, O'Hara ? | 1830 | AU ? | LEITRIM | 974, 977 |
| 991 | Mary, Ann | Graham, O'Hara | 1858, 1880 | ON ? | 766, 767, 769, 770 |
| 2289 | Mary, Ann | O'Hara | 1849 | PA | 981 |
| 246 | Mary, Ann | McCaffrey, O'Hara | QB | 665, 666 |
| 1791 | Mary, Ann | Murray, O'Hara | 786 |
| 2163 | Mary, Ann Roach | Roach, O'Hara | 1905 | ON | 926 |
| 2737 | Mary, Ann, Eliz., Marianne | O'Hara | 1880+ | NS | 1 1 9 5, |
| 428 | Mary, Ann, Marianne ? | O'Hara, Greene | NS | 198, 199, 925 |
| 1512 | Mary, Anthony | O'Hara | 1790, 1850 | IN | 664 |
| 360 | Mary, C. | O'Hara, McCormack | 1893-01-03, 1923 | MA | 090 |
| 1736 | Mary, Calista, Cliss | O'Hara | 1885 | ON | 770 |
| 198 | Mary, Cathrine | O'Harrah, Ingles | 1860-08-08 | OH | 046, 054 |
| 1902 | Mary, E. | Healey, O'Hara | 1857, 1926-01-05 | NY | 804 |
| 1500 | Mary, Eileen | O'Hara, Fortunato | 1958-12-12; 84-11-17 | PA, DC | 659 |
| 1018 | Mary, Elenor | Dickie, O'Hara | NS ? | 371 |
| 1923 | Mary, Elizabeth | O'Hara, Cashman | 1879; 1974-03-25 | NY | 804 |
| 2306 | Mary, Elizabeth | O'Hara, Schulstad | 1895-03-20; 1923-12-31; 1979-11-03 | MN | 981 |
| 1830 | Mary, Elizabeth | Ledger, O'Hara | 786 |
| 555 | Mary, Elizabeth | Ramsey, O'Hara | TX ? | 168 |
| 1674 | Mary, Elizabeth | O'Hara | 1873 | GA | 904, 907 |
| 1913 | Mary, Elizabeth, Molly | O'Hara | 1881; 1937-11-13 | NY | 804 |
| 1559 | Mary, Ellen | O'Connell, O'Hara | 1882-05-29 | MA | 701, 704 |
| 54 | Mary, Ellen | Shannon, O'Hara | 1869-08, 1870-08, 1948 | NY | 014, 015 |
| 1702 | Mary, Ellen | Dolan, O'Hara | EN | 759 |
| 1730 | Mary, Ellen | O'Hara, Davis | 1871 | ON | 770 |
| 2407 | Mary, J. | O'Harra | 1864?, 1880+ | NY | 1 0 3 6, |
| 260 | Mary, Jane | O'Hara | 1854 | AU | 057 |
| 1057 | Mary, Jane | Laverty, O'Hara | 1845 | IR ? | ANTRIM | 394, 612 |
| 2354 | Mary, Jane | Lear, O'Hara | 997, 999 |
| 328 | Mary, Jane | O'Hara, Regan | 1844 | MD | 352 |
| 1148 | Mary, Jane | Hawkes, O'Hara | 1870, 1921 | NB | 473, 970 |
| 2712 | Mary, Jane | O'Hara | 1850 ?, | 1 1 8 9, |
| 702 | Mary, Jane | Hamilton, Penn, O'Hara | 1840, 1843 | MD ? | 227, 552, 797, 870, 1 1 8 9 (?), 1 1 9 0, |
| 520 | Mary, Kelly ? | O'Hara, Kelly ? | 1869-11-04 | SL | 180 |
| 576 | Mary, Louise | O'Hara | IL, PA ? | 178 |
| 1415 | Mary, Louise | O'Hara | 1840s | MO, IL | 605 |
| 652 | Mary, Louise | O'Hara | 1889 | ON | 238 |
| 210 | Mary, Louise | O'Harrah | OH | 046 |
| 386 | Mary, Margaret | Jeffries, O'Hara | 1901-04-16 | AZ | 122 |
| 146 | Mary, Margaret | O'Hara, Kelly | 1855-01, 1860, 1861, 1880 | PA | MAYO | 508, 509, 549, 584, 631, 792 |
| 1973 | Mary, Margaret | May, O'Hara | 1900 | MO | 821 |
| 1896 | Mary, Margert | O'Hara, Leschander | NY | 800, 801, 802, 803 |
| 791 | Mary, Marie | O'Hara, Anderson | 1910, 1915 | NY | LEITRIM | 280, 301 |
| 2272 | Mary, Maynie ? | Andrews, O'Hara | 1883, 1930 | OH | 984, 1 0 6 4, |
| 369 | Mary, Mimi | Nantais, O'Hara | 1880 | ON | 097 |
| 1985 | Mary, Moyra | O'Hara | IR | CORK ? | 829 |
| 992 | Mary, Rosalie | Deschenes, O'Hara | 1875, 1901 | ON, WI | 766, 767, 769, 770 |
| 322 | Mary, S. | O'Hara, Doyle | 1819, 1839, 1908-12-12 | MI | IRLAND | 078 |
| 900 | Mary, Theresa, Mamie | Cosgrove, O'Hara | 1869-11, 1890-01-06, 1894, 1920, 1930+ | LA | 320, 1 0 0 7, 1 0 2 3, 1 0 2 4, 1 0 2 5, 1 0 2 6, 1 0 2 9, |
| 2276 | Mary, Virginia. | O'Hara | 1914, 1930 | OH | 984, 1 0 6 4, |
| 1049 | Mathew | O'Hara | 1897?, 1915-12-06 | SL | SCOTLAND | 386, 451 |
| 619 | Maud | O'Hara | MA | 188 |
| 2509 | Maud | O'Hara | 1875?, 1880 | MO | 1 0 8 5, 1 0 8 6, |
| 1946 | Maureen | O'Hara, Kleehammer | 1949-08-13; 2003+ | NY | 804 |
| 1077 | Maureen | O'Hara | 2001 | AS | SLIGO, MAYO ? | 421 |
| 2707 | Maureen | O'Hara | IR ? | TYRONE | 1 1 8 8, |
| 1475 | Maureen | O'Hara | c. 1950 | EN | 658 |
| 1014 | Maureen | O'Hara | NY ? | 369 |
| 1930 | Maurice, J. | O'Hara | 1891; 1946-01-14 | NY, AZ | 804 |
| 1282 | May | O'Hara | SL | 532 |
| 291 | May, Ann | O'Hara, McEntee | 1842, 1872 | NJ, NZ | ANTRIM | 067 |
| 1353 | May, Edith | O'Hara | WI ? | 598, 600 |
| 1122 | Melinda | O'Hara, O'Hare | 1843 | OH ? | 439 |
| 1203 | Michael | O'Hara | ME ? | 500 |
| 1361 | Michael | O'Hara | 1880 ? | IR | LIMERICK | 583 |
| 476 | Michael | O'Hara | 1855 | SLIGO | 143 |
| 1289 | Michael | O'Hara | 1872 ?, 1881 | SL | 538, 539 |
| 530 | Michael | O'Hara | 1792, 1865, 1870 | IRELAND | 156, 174 ? |
| 792 | Michael | O'Hara | IR | LEITRIM, SLIGO | 301 |
| 286 | Michael | O'Hara | 1876 | EN | 743, 744, 745, 748, 760, 780, 816, 817 |
| 2595 | Michael | O'Hara | 1851, 1870, | IL | IRELAND | 1 1 0 5, |
| 2607 | Michael | O'Hara | 1869, 1870 | IL | 1 1 0 5, |
| 1080 | Michael | O'Hara | 1863-03, 1908-03-13 | IR | ANTRIM | 423 |
| 2367 | Michael | O'Hara | 1862 | PA | 1 0 0 9, |
| 2627 | Michael | O'Hara | 1860 ?, | GA | 1 2 3 2, |
| 1349 | Michael | O'Hara | 1850? | IR | IRELAND | 581 |
| 1095 | Michael | O'Hara | 1846, 1865, 1868 | IR, EN | CLARE | 432 |
| 75 | Michael | O'Hara | 1860, 1880 | PA | 021 |
| 332 | Michael | O'Hara | 1845, 1850 | IN | 083 |
| 590 | Michael | O'Hara, O'Hora | 1855, 1878 | PA | 184, 277, 284 |
| 1367 | Michael | O'Hara | 1905 | IR | LIMERICK | 583 |
| 1370 | Michael | O'Hara | 1886, 1888 ? | NS, MA | IRELAND ? | 588, 827, 1 1 9 6, 1 2 0 0, |
| 350 | Michael | O'Hara | 1849, 1872, 1875, 1899 | EN, MA, IL | SLIGO? | 089 |
| 606 | Michael | O'Hara | 1839, 1893 | PA | SLIGO | 277, 404, 406, 407 |
| 357 | Michael | O'Hara | 1906 | IL | 089 |
| 2150 | Michael | O'Hara | 1931 | NY ? | MAYO | 897 |
| 2431 | Michael | O'Hara | 1855, 1870+ | CT | 1 0 4 0, 1 0 4 1, |
| 1411 | Michael | O'Hara | CA ? | 604 |
| 1667 | Michael | O'Hara | IR | MAYO | 778 |
| 2181 | Michael | O'Hara | c. 1821 | NY | 932 |
| 2454 | Michael | O'Hara | 1852 | EN, AU | 1 0 5 7, |
| 1691 | Michael | O'Hara | 1853 | NY, OK | MAYO, ENGLAND ? | 815 |
| 412 | Michael | O'Hara | IR | LEITRIM | 109 |
| 671 | Michael | O'Hara | 1849-09, 1875 | MA, IL | SLIGO, ENGLAND | 208, 405, 655 |
| 162 | Michael | O'Hara, | c. 1858, 1859?, 1880, 1888, 1893, | NY | 374, 986, 1 0 6 1, 1 0 6 2, |
| 677 | Michael | O'Hara | 1839 | PA | SLIGO | 403 |
| 1701 | Michael | O'Hara | 1877 | EN | 759, 811 ? |
| 2213 | Michael | O'Hara | 1889, 1891 | IR | SLIGO | 948 |
| 2217 | Michael | O'Hara | 1889, 1915 | IR, US | SLIGO | 948 |
| 2475 | Michael | OHara | 1854?, 1857, 1870 | NY | 1 0 5 9, 1 0 6 0, |
| 432 | Michael | O'Hara | 1888 | MA | 118, 827 |
| 2229 | Michael | O'Hara | 2003 | VA ? | 954 |
| 1718 | Michael | O'Hara | 1889-05-20; 1967 | PA | IRELAND | 765 |
| 188 | Michael | O'Hara | c. 1750 | IR | SLIGO | 130, 135, 136, 174 |
| 1474 | Michael | O'Hara ? | c. 1950 ? | EN | 658 |
| 1478 | MIchael | O'Hora, O'Hara ? | PA ? | 659 |
| 2251 | Michael | O'Hara | 1858, 1878, 1899 | NY | IRELAND | 961 |
| 987 | Michael | O'Hara | 1844 | ON | IRELAND | 766, 767, 769, 770 |
| 482 | Michael | O'Hara | 1865, 1868, 1900, 1967? | NZ | SLIGO | 535, 653 |
| 2023 | Michael | O'Hara | 1819, 1841, 1847 | CT | IRELAND | 836, 1 0 0 6, 1 0 4 4, |
| 1256 | Michael | O'Hara | 1841 ?, 1881 | EN | IRELAND | 764 |
| 2028 | Michael | O'Hara | 1855 | CT | IRELAND | 836, 1 0 0 6, 1 0 4 4, |
| 1261 | Michael | O'Hara | 1877, 1881 | EN | 764 |
| 750 | Michael | O'Hara | 1848 | IR | DUBLIN | 243 |
| 1265 | Michael | O'Hara | 1821 ?, 1871 | EN | SLIGO | 811 |
| 2294 | Michael | O'Hara | 1854 | PA | 981 |
| 508 | Michael | O'Hara | IR | MAYO | 146 |
| 2282 | Michael (2) | O'Hara | c. 1824, 1850 | PA | SLIGO | 981 |
| 1891 | Michael, A. | O'Hara | 1898-08; 1963-01 | PA | 799 |
| 1558 | Michael, Aloysius | O'Hara | 1860, 1882-05-29, 1929 | MA, NY | DERRY | 701, 704 |
| 1941 | Michael, C. | O'Hara | 1953-10-08; 1979-09-08; 1995-06-05; 2003+ | NY | 804 |
| 1499 | Michael, Edward | O'Hara | 1957 | PA | 659 |
| 682 | Michael, J. | O'Hara | 1828, 1848, 1857 | NY | ARMAGH | 214, 259 |
| 2007 | Michael, J. | O'Hara | 1822, 1834, 1862, 1913 | PA, NY | IRELAND | 835 |
| 110 | Michael, James | O'Hara | 1825, 1835 | PA | SLIGO | 033 |
| 2018 | Michael, James | O'Hara | 1870, 1955 | PA, NY | 835 |
| 965 | Michael, James or Henry | O'Hara | 1844, 1862, 1872 | AU | CAVAN | 360 |
| 755 | Michael, John | O'Hara | 1886 | OH | 243 |
| 2423 | Michael, Michail | O'Hara | 1815?, 1819?, 1821?, 1880+ | CT | IRELAND | 1 0 3 9, 1 0 4 0, 1 0 4 1, 1 0 4 2, |
| 2488 | Michael, Michal, John | O'Hara | 1868, 1880, | PA | 1 0 7 0, |
| 1138 | Michael, Michalo | O'Harrow, O'Hair | 1749-09-11; 1793-04-04; 1813 | KY | 147, 458 |
| 2484 | Michael, Mikal | O'Hara | 1837?, 1880, | PA | GALWAY, ROSCOMMON ? | 1 0 7 0, |
| 536 | Michael, Mike | O'Hara | 1882 | GA | IRELAND | 244, 245, 246 |
| 1945 | Michael, William | O'Hara | 1984-08-31; 2003+ | NY | 804 |
| 1603 | Michael, William | O'Hara | 1909 ?, 1916 ? | NY | MAYO | 708 |
| 125 | Michale | O'Hara | 033 |
| 1165 | Michelle | O'Hara | NB | 493 |
| 801 | Mick | O'Hara | 1856 | ON, SK ? | 282, 287 |
| 1651 | Mickey | O'Hara | IL | 768 |
| 1091 | Mihal, Mike | Josefczyk, Josefczyk, O'Hara | 1894-09-21; 1896-09-24; 1909-11-15; 1917, 1919-06-04; 1962-04 | IL, TX | CONTINENT, AUSTRIA, POLAND ? | 425, 879 |
| 686 | Mike | O'Hara | 1853 | NY | 214 |
| 2621 | Mikel, J. | O'Hara | 1859, 1870, | IL | IRELAND | 1 1 0 4, |
| 1574 | Mildred | O'Hara | MA | 701, 704 |
| 1659 | Minnie | Fairchilds, O'Hara | 1885, 1886 | PA | ENGLAND | 741 |
| 2436 | Minnie | O'Hara | 1873?, 1880+ | CT | 1 0 4 2, |
| 2701 | Minnie | O'Hara | c. 1890 | MAYO | 1 1 8 7, 1 2 3 8, 1 2 3 9, 12 4 0 |
| 1682 | Minnie | Leyde, O'Hara | 1927 | NY ? | 754 |
| 1180 | Minnie | Kester, O'Hara | 1879-10-10; 1897-09-15; 1915 | NE | 496 |
| 2660 | Minnie, E. | O'Hara | 1863-11-03; 1901+ | ON | 1 1 4 9, |
| 189 | Mollie, Ann | O'Hara, Dyer | c. 1760 | IR | SLIGO | 130, 135, 136, 174 |
| 813 | Mollie, Mary, Eleanor | O'Hara, Comeford | IA, OH ? | 288 |
| 2704 | Molly | McGovern, O'Hara | 2004+ | IR | TYRONE | 1 1 8 8 |
| 1006 | Molly, Foxy | McGovern, O'Hara | 1912, 2004 | IR, NY | CAVAN | 369, 990 |
| 1527 | Monica | Winkle, O'Hara | VT | 679 |
| 553 | Mrs. | O'Hara, Gaynor | 1810, 1840, 1905 | LA | CAVAN | 166, 167 |
| 1158 | Murray | O'Hara | NB | 493, 929 |
| 2241 | Murray | O'Hara | 1876 | ON | 958 |
| 1813 | Myrle | Romney, O'Hara | 786 |
| 864 | Myrtle | O'Hara | IN | 303 |
| 1067 | Nan | O'Hara, O'Neill | 1900, 1910 ? | NY | 409, 413 |
| 1033 | Nancy | O'Hara, McCarrick | 1790, 1824, 1870 | IR, US ? | SLIGO | 378 |
| 74 | Nancy | Haines, O'Hara, O'Harra | 1840, 1870 | WI, IA | 041, 283 |
| 333 | Nancy | O'Hara, Keith | IN | 083 |
| 978 | Nancy | Jackson, O'Hara | 1871 | KY | 361 |
| 481 | Nancy | O'Hara, McCarrick | 1825 | IR | SLIGO | 700 |
| 1510 | Nancy | Catalano, O'Hara | PA ? | 659 |
| 858 | Nancy Luticia | Crockett, O'Hara | 1875-03-13 | IN | 303, 944 |
| 1240 | Nancy, Anne | O'Hara, McCarrick | 1790, 1825 | IR | SLIGO, MAYO | 518 |
| 306 | Nancy, J. | O'Hara, O'Harra | 1849, 1870 | WI, IA, OH | 094 |
| 170 | Nancy, J. | Haines, O'Hara, O'Harra | 1840, 1890 | OH, WI, IA | 039 |
| 2106 | Nanette, J. | Clark, O'Hara | IA | 881 |
| 2234 | Nannette | Clark, O'Hara | 1890 | 956 |
| 1793 | Nell, Ellen | O'Hara, Marr | 786 |
| 1936 | Nellie | Townsend, O'Hara | NY | 804 |
| 67 | Nellie | O'Hara | 1856 | NY | 016 |
| 860 | Nellie | O'Hara | IN | 303 |
| 2259 | Nellie | O'Hara | 1899 | NY | 961 |
| 1763 | Nellie, Ellen ? | O'Hara | NY | 783 |
| 167 | Nellie, L. | 1919-8-12 | NY | 374 |
| 2408 | Nellie, M. | O'Harra | 1866?, 1880+ | NY | 1 0 3 6, |
| 2677 | Nellie, M. | O'Hara | c. 1908, 1930+ | MO | 1 1 5 1, 1 1 5 7, |
| 796 | Neola | O'Hara | 1906 | NE | 299 |
| 964 | Neola | O'Hara | 1906 | NE | 349 |
| 1015 | Netina | Etzler, Pape, O'hara | MI | 370 |
| 2324 | Nora | Casey, O'Hara | 1892 | MN | 981 |
| 1115 | Nora | O'Hara, O'Hare | 1799, 1808 | PA, OH ? | SCOTLAND | 439 |
| 2223 | Nora | O'Hara | IR, US | SLIGO | 948 |
| 998 | Nora | Dotsonin, O'Hara | AL | 414 |
| 2281 | Nora | Durkin, O'Hara | 1795, 1837 | IR, PA | SLIGO | 981 |
| 2284 | Nora | O'Hara | 1824 | PA | SLIGO | 981 |
| 2290 | Nora (2) | O'Hara, Jordan | 1825 | PA | SLIGO | 981 |
| 1322 | Nora, Kathryn | O'Hara, Hudson | TX | 561 |
| 1362 | Norah | Hogan, O'Hara | 1880 ? | IR | LIMERICK | 583 |
| 2250 | Norma | O'Hara | 1920s | AU | 960 |
| 1313 | Norman | O'Hara | ON | 684 |
| 1803 | Olga | O'Hara, Peynado | 786 |
| 123 | Oliver | O'Hara | ENGLAND | 033 |
| 323 | Orlena | Parks, O'Hara | 1855-12-20; 1857-03-11 | IA | 079, 979 |
| 2696 | Orlena | Park, O'Hara | 1850s | IA ? | 1 1 7 9, |
| 103 | Orvis | O'Hara | NY | 026 |
| 56 | Owen | O'Hara | NY | CAVAN | 014, 015 |
| 2116 | Owen | O'Hara | 1888, 1899-12-21 | MA | ENGLAND ? | 887 |
| 1378 | Owen | O'Hara | 1828-11-02 | IR, SL | ANTRIM | 592 |
| 1123 | Owen | O'Hara, O'Hare | 1847 | OH ? | 439 |
| 1132 | Owen | O'Hara | IR, SL | LEITRIM | 454 |
| 883 | Owen | O'Hara | 1828-11-02, 1851 | IR, SL | ANTRIM | 309 |
| 951 | Owen | O'Hara | 1865-03-05 | IR | LEITRIM | 342, 383, 795 |
| 997 | Owen | O'Hara | AL | SCOTLAND | 414 |
| 2118 | Owen (Sr.) | O'Hara | c.1888 | MA | ENGLAND ? | 887 |
| 1034 | Paddy | O'Hara | IR | SLIGO | 378 |
| 1241 | Paddy | O'Hara | IR | SLIGO, MAYO | 518 |
| 625 | Pansy | O'Hara | NH ? | 189 |
| 947 | Parvis | O'Hara ? | 1811, 1840, 1842 | IR, PA ? | IRELAND | 337 |
| 311 | Parvis ? | O'Hara ? | 1811 | US | IRELAND | 641 |
| 1280 | Pat | O'Hara | SL | 532 |
| 2578 | Pat | O'Hara | 1829, 1870, | IL | IRELAND | 1 0 8 9, |
| 2585 | Pat | O'Hara | 1868, 1870, | IL | 1 0 8 9, |
| 2612 | Pat | O'Hara | 1829, 1870, | IL | IRELAND | 1 1 0 4, |
| 2619 | Pat | O'Hara | 1868, 1870 | IL | 1 1 0 4, |
| 842 | Pat | O'Hara | ON, PA, NJ ? | 298, 305 |
| 2541 | Pat | O'Hara, O'Harra | 1834, 1850+ | MA | 1 1 1 0, |
| 1523 | Pat Jr | O'Hara | 1940 ? | TX | 670 |
| 2544 | Patk | O'Hara | 1838, 1880 | MA | IRELAND | 1 1 1 3, |
| 2546 | Patk (2) | O'Hara | 1863, 1880 | MA | 1 1 1 3, |
| 2545 | Patk (3) | O'Hara | 1880 | MA | 1 1 1 3, |
| 1471 | Patric | O'Hara | c. 1950 ? | EN | 658 |
| 787 | Patrica | O'Hara | MB | 279, 818 |
| 995 | Patrica | O'Hara | CN | 506 |
| 1938 | Patricia | Richter, O'Hara | 1949-04-15; 1971-06-19; 2003+ | NY | 804 |
| 2128 | Patricia | O'Hara | PA | 889 |
| 1622 | Patricia | O'Hara | 1925, 1934 ? | NY | 708 |
| 510 | Patricia | O'Hara | IR ? | MAYO | 146 |
| 1287 | Patrick | O'Hara | 1868 ?, 1881 | SL | 538, 539 |
| 2364 | Patrick | O'Hara | 1855 | PA | 1 0 0 9, |
| 2560 | Patrick | O'Hara | 1929, 1930 | IL | 1 1 0 9, |
| 1025 | Patrick | O'Hara | 1840-03-17; 1882; 1937 ? | OR, WA | IRELAND | 375, 1 0 1 4, |
| 1794 | Patrick | O'Hara | 786 |
| 2562 | Patrick | O'Harrio, O'Hara | 1928, 1930 | IL | 1 1 0 9, |
| 2563 | Patrick | O'Hara | 1846, 1920 | IL | IRELAND | 1 1 0 8, |
| 4 | Patrick | O'Hara | 1845 | US | CAVAN | 004 |
| 2564 | Patrick | O'Hara | 1856,1920 | IL | IRELAND | 1 1 0 8, |
| 2565 | Patrick | O'Hara | 1859, 1870, 1880, 1910, 1920 | IL | IRELAND | 1 0 8 9 ?, 1 0 9 0, 1 1 0 7, 1 1 0 8, 1 1 0 6, |
| 774 | Patrick | O'Hara | IR ? | SLIGO | 334 |
| 2566 | Patrick | O'Hara | 1884, 1920 | IL | 1 1 0 8, |
| 2567 | Patrick | O'Hara | 1842, 1910 | IL | 1 1 0 7, |
| 2568 | Patrick | O'Hara | 1862, 1910 | IL | 1 1 0 7, |
| 2570 | Patrick | O'Hara | 1879, 1910 | IL | 1 1 0 7, |
| 1547 | Patrick | O'Hara | 1811 | NB | 692 |
| 2571 | Patrick | O'Hara | 1887, 1910 | IL | 1 1 0 7, |
| 12 | Patrick | O'Hara | 1801 | CAVAN | 004 |
| 2572 | Patrick | O'Hara | 1840, 1880 | IL | IRELAND | 1 0 9 0, 1 1 0 6, |
| 2573 | Patrick | O'Hara | 1825, 1880 | IL | IRELAND | 1 0 9 0, 1 1 0 6, |
| 2574 | Patrick | O'Hara | 1852, 1880 | IL | IRELAND | 1 0 9 0, 1 1 0 6, |
| 2575 | Patrick | O'Hara | 1856, 1880 | DE, IL | 1 0 9 0, 1 1 0 6, |
| 2576 | Patrick | O'Hara | 1866, 1870 | IL | 1 0 8 9, |
| 281 | Patrick | O'Hara | 1834, 1868, 1884 | EN | MAYO | 743, 744, 745, 748, 760, 780 |
| 2588 | Patrick | O'Harra | 1839, 1870, | IL | IRELAND | 1 0 8 9, |
| 2590 | Patrick | O'Hara | 1819, 1870, | IL | IRELAND | 1 0 8 9, 1 1 0 4, |
| 1823 | Patrick | O'Hara | 786 |
| 2591 | Patrick | O'Hara | 1829, 1870, | IL | IRELAND | 1 0 8 9, 1 1 0 4, |
| 2592 | Patrick | O'Hara | 1858, 1870, | IL | IRELAND | 1 0 8 9, 1 1 0 4, 1 1 0 5, |
| 290 | Patrick | O'Hara | 1886, 1966 | CA | 747 |
| 809 | Patrick | O'Hara | 1868 | ON, SK ? | 282, 287 |
| 299 | Patrick | O'Hara | 1730 | PA | IRELAND | 069 |
| 1069 | Patrick | O'Hara | 1900, 1910 ? | NY | 409, 413 |
| 2605 | Patrick | O'Hara | 1866, 1870, | IL | 1 1 0 4, 1 1 0 5, |
| 2608 | Patrick | O'Harra | 1839, 1870, | IL | IRELAND | 1 1 0 4, |
| 2097 | Patrick | O'Hara | 1842, 1843 | ON | IRELAND | 873 |
| 2360 | Patrick | O'Hara | c. 1815 | PA | MAYO | 1 0 0 9, |
| 1082 | Patrick | O'Hara | 1861-05; 1880-05 | IR | ANTRIM | 423 |
| 315 | Patrick | O'Hara | 719 |
| 317 | Patrick | O'Hara | IR | MAYO | 483 |
| 65 | Patrick | O'Hara | 1854, 1862 | NY | 016 |
| 2369 | Patrick | O'Hara | 1820s, 1847, 1860 | GA | SLIGO | 1 0 1 0, 1 2 3 2, |
| 1090 | Patrick | O'Hara | 1880-05 | IR | ANTRIM | 423 |
| 1346 | Patrick | O'Hara | 1850? | NY | IRELAND | 581 |
| 1604 | Patrick | O'Hara | IR | MAYO | 708 |
| 2120 | Patrick | O'Hara | 1888 | MA | 887 |
| 2378 | Patrick | O'Hara | 1897, 1899 | 1 0 1 5, 636 |
| 850 | Patrick | O'Hara | 1850 ? | NY | LEITRIM ? | 306 |
| 88 | Patrick | O'Hara | ON | 192 |
| 1114 | Patrick | O'Hara, O'Hare | 1770, 1847 | PA, OH | IRELAND | 439 |
| 604 | Patrick | O'Hara | 1890, 1920 | PA | 277 |
| 93 | Patrick | O'Hara | 1774 | 023 |
| 353 | Patrick | O'Hara | MA, IL | 089 |
| 99 | Patrick | O'Hara | MAYO | 024 |
| 1637 | Patrick | O'Hara | PA | 728, 724 |
| 1898 | Patrick | O'Hara | 1847, 1851, 1875, 1909-08-14 | NY | LEITRIM | 804 |
| 2666 | Patrick | O'Hara | 1 1 4 3, |
| 366 | Patrick | O'Hara | 1884 | IR | ANTRIM | 093 |
| 1150 | Patrick | O'Hara | 1862-08; 1909 | OH | SLIGO | 480 |
| 1670 | Patrick | O'Hara | IR | MAYO | 778 |
| 139 | Patrick | O'Hara | PA | 036 |
| 2445 | Patrick | O'Hara | 1899, 1930+ | IL, NY | 1 0 5 1, |
| 2706 | Patrick | O'Hara | 2004+ | IR ? | TYRONE | 1 1 8 8, |
| 670 | Patrick | O'Hara | 1868 | NY | TYRONE | 203, 207 |
| 1950 | Patrick | O'Hara | SL | 806 |
| 1695 | Patrick | O'Hara | MAYO | 815 |
| 1696 | Patrick | O'Hara | OK ? | 815 |
| 1442 | Patrick | O'Hara | 1897-03-04; 1899-03-04 | AR, IL, TX | 636, 1 0 1 5, |
| 675 | Patrick | O'Hara | MA ?, IL | 208 |
| 934 | Patrick | O'Hara | 357 |
| 679 | Patrick | O'Hara | 1860 | VA | SLIGO | 652 |
| 435 | Patrick | O'Hara | IR | LIMERICK | 236 |
| 183 | Patrick | O'Hara | 1823 | IR | ANTRIM | 271 |
| 1720 | Patrick | O'Hara | PA | 765 |
| 955 | Patrick | O'Hara | 1905 | MA | LEITRIM | 795 |
| 2754 | Patrick | O'Hara | 1849, 1860 ? | PA | 1 2 1 0, |
| 452 | Patrick | O'Hara | OH | IRELAND | 126, 262 |
| 2246 | Patrick | O'Hara | 1898-3;1899-3 (?), 1930 | IL | 959, 963, 1 0 4 8, 1 0 4 9, |
| 711 | Patrick | O'Hara | IR | LEITRIM | 234, 109 |
| 468 | Patrick | O'Hara | c.1823, 1872, 1901 | IR, QB | MAYO | 142, 1 0 2 1, 1 0 8 1, |
| 733 | Patrick | O'Hara | 1848, 1864 | US ? | CORK | 242, 291 |
| 222 | Patrick | O'Hara | 1870, 1880 | MAYO | 485 |
| 483 | Patrick | O'Hara | IR | SLIGO ? | 535, 653 |
| 742 | Patrick | Hares, O'Hara | 1828 | IR | 250 |
| 2534 | Patrick | O'Hara | c.1750 ?? | IR | LEITRIM | 1 0 7 9, 130 ? |
| 744 | Patrick | O'Hara | 1828-10-15 | CN, NY | IRELAND | 250 |
| 746 | Patrick | O'Hara | NY | IRELAND | 247, 242 |
| 1770 | Patrick | O'Hara | 1767?, 1769-03-17; 1794-07-04; 1850-05-17 | VT, NY | DERRY | 784, 882, 883, 899, 901, 921, 992, 1 1 1 4, |
| 2539 | Patrick | O'Hara | 1860, 1870 | IL | CAVAN | 1 0 8 8, 1 1 1 0, 1 1 6 1, |
| 492 | Patrick | O'Hara | 1838 | IR | SLIGO | 654 |
| 2540 | Patrick | O'Hara | 1817, 1850 | MA | IRELAND | 1 1 1 0, 1 1 6 1, |
| 1262 | Patrick | O'Hara | 1879 ?, 1881 | EN | 764 |
| 2542 | Patrick | O'Hara | 1855, 1880 | MA | IRELAND | 1 1 1 3, |
| 2543 | Patrick | O'Hara | 1848, 1880 | MA | IRELAND | 1 1 1 3, |
| 1008 | Patrick | O'Hara | NY ? | 369 |
| 1520 | Patrick | O'Hara | 1900, 1920 | TX | 670 |
| 2547 | Patrick | O'Hara | 1840, 1870 | MA | IRELAND | 1 1 1 2, |
| 2548 | Patrick | O'Hara, O'Haira | 1833, 1870 | MA | IRELAND | 1 1 1 2, |
| 2549 | Patrick | O'Hara | 1799, 1860 | MA | IRELAND | 1 1 1 1, |
| 2552 | Patrick | O'Hara | c.1887, 1930 | IL | 1 1 0 9, |
| 2553 | Patrick | O'Hara | c.1903, 1930 | IL | IRELAND | 1 1 0 9, |
| 2554 | Patrick | O'Hara | c. 1909, 1930 | IL | 1 1 0 9, |
| 2555 | Patrick | O'Hara | c. 1906, 1930 | IL | 1 1 0 9, |
| 2556 | Patrick | O'Hara | c.1906, 1930 | IL | 1 1 0 9, |
| 2557 | Patrick | O'Hara | c. 1907, 1930 | IL | 1 1 0 9, |
| 2558 | Patrick | O'Hara | c.1865, 1930 | IL | IRELAND | 1 1 0 9, |
| 2559 | Patrick | O'Hara | c. 1904, 1930 | IL | SCOTLAND | 1 1 0 9, |
| 2550 | Patrick (2) | O'Hara | 1858, 1860 | MA | 1 1 1 1, |
| 1790 | Patrick, Captain | O'Hara | 1840, 1885 | 786 |
| 2020 | Patrick, Aloysius | O'Hara | 1879, 1955 | NY | 835 |
| 275 | Patrick, E. | O'Hara | 1863-06-30, 97-12-27, 1898 | PA | ENGLAND | 061, 155, 205 |
| 1683 | Patrick, F. | O'Hara | 1927 | NY ? | 754 |
| 2483 | Patrick, Henry | O'Hara | 1867, 1920s | PA | 1 0 7 0, |
| 771 | Patrick, J. | O'Hara | 1900 | US | SLIGO | 267 |
| 2569 | Patrick, J. | O'Hara | 1861, 1910 | IL | 1 1 0 7, |
| 31 | Patrick, J. | O'Hara | c. 1870 | PA | 983 |
| 1003 | Patrick, J. | O'Hara | 1968, 1969 | NY | 710 |
| 2551 | Patrick, J. | O'Hara | c.1875, 1930 | IL | 1 1 0 9, |
| 1645 | Patrick, James ? | O'Hara | 1920s, 1930s | EN | ANTRIM | 725 |
| 2008 | Patrick, Joseph | O'Hara | 1822, 1834 | IR | IRELAND | 835 |
| 142 | Patrick, Michael | O'Hara | 1840, 1854-03, 1860 | IR | MAYO | 477, 484, 508, 509, 519, 549, 584, 631, 792, 793 |
| 2535 | Patrick, Pat | O'Hara | c.1829, 1860, 1867? | IL | IRELAND | 1 0 8 8, 1 0 9 1, |
| 1007 | Patrick, Patsy | O'Hara | IR | CAVAN | 369 |
| 439 | Patrick, Thomas | O'Hara | 1850 ? | MO ? | ARMAGH | 121 |
| 362 | Patrick, W. | O'Hara | 1893 | MA | IRELAND | 090 |
| 2561 | Patrick, W. ? | O'Hara | c.1859, 1910, 1920, 1930 | PA, IL | 1 1 0 7, 1 1 0 8, 1 1 0 9, |
| 2494 | Patrick, William ? | O'Hara | 1815?, 1822 ?, 1840s | QB?, ON, NY | MAYO, LEITRIM | 1 0 7 1, 1 0 7 2, 1 0 7 4, 1 0 7 5, 1 0 7 6, 1 0 7 8, 1 1 0 0, 1 1 0 3, 1 1 2 1, 1 1 2 2, 1 1 4 4 ?, |
| 537 | Pauline | Hanse, O'Hara | 1882 | GA | 244, 245, 246 |
| 2678 | Pauline | O'Hara | c.1910, 1930+ | MO | 1 1 5 1, 1 1 5 7, |
| 372 | Penelope | MacNicholas, O'Hara | 1800+ | IR | MAYO, SLIGO | 098 |
| 461 | Pete | O'Hara | NY | MAYO | 138 |
| 2049 | Peter | O'Hara | 1872 | MD | MAYO | 837 |
| 16 | Peter | O'Hara | 1850 | NH, NY | 003 |
| 2599 | Peter | O'Hara | 1860, 1870, | IL | IRELAND | 1 1 0 5, |
| 808 | Peter | O'Hara | 1866 | ON, SK ? | 282, 287 |
| 1333 | Peter | O'Hara | 1960+, 1997 ? | EN, WL | ENGLAND | 572, 573 |
| 55 | Peter | O'Hara | NY | 014, 015 |
| 2141 | Peter | O'Hara | 1801 | OH, PA, NY ? | ANTRIM, DERRY ? | 895 |
| 1144 | Peter | O'Hara | 1775-11-16; 1808 | IR, NY | ANTRIM ? | 468, 470, 472, 850, 894 |
| 2195 | Peter | O'Hara | 1857 | SL | 942 |
| 2197 | Peter | O'Hara | 1831?, 1858-04-14, 1881 | SL | IRELAND | 942, 955 |
| 2753 | Peter | O'Hara | 1847, 1860+ | PA | 1 2 1 0, |
| 197 | Peter | O'Harrah | 1860-08-08 | OH | 046 |
| 1273 | Peter | O'Hara | 1885 | PA | 530 |
| 2142 | Peter (2) | O'Hara | 1837 | IR | ANTRIM, DERRY ? | 895 |
| 2687 | Peter ?, Rodney ? | O'Hara | 1 1 6 4, 1 1 6 8, |
| 2503 | Peter, (= Daniel, Peter ) | O'Hara | 1858-01-18; 1860, 1880+ | NY, MO, IL ? | 1 0 7 2, 1 0 8 2, 1 0 8 4, 1 0 8 5, 1 0 8 6, 1 0 8 7, 1 0 9 3, 1 0 9 4, 1 0 9 5, 1 0 9 7, 1 0 9 9, 1 1 0 0, 1 1 2 1, 1 1 2 2, 1 1 2 5, 1 1 3 0, 1 1 3 3, 1 1 3 4, 1 1 4 6, |
| 1998 | Peter, F. | O'Hara | 1928-06-14 | NY | 833 |
| 2081 | Peter, Jr. | O'Hara | NY | 894 |
| 330 | Phebe | Shaw, O'Hara | IN | 081, 082, 083 |
| 116 | Philip | O'Hara | 1858 | ON | 239 |
| 647 | Philip | O'Hara | 1858 | ON | 238 |
| 1949 | Philip | O'Hara | MA | 805 |
| 1202 | Philip | O'Hara | ME ? | 500 |
| 244 | Philip | O'Hara | ON | 228, 666 |
| 1655 | Phillip | O'Hara | 1831, 1867 | EN | 734 |
| 678 | Phillip | O'Hara | 1860 | VA | SLIGO | 652 |
| 2744 | Phillip | O'Hara | IR, NY ? | SLIGO | 1 1 9 7, (117?) |
| 491 | Phillip | O'Hara | IR | SLIGO | 651, 654 |
| 496 | Phillip (2) ? | O'Hara | 1849 | IR | SLIGO | 654 |
| 845 | Phonse | O'Hara | ON, PA, NJ ? | 298, 305 |
| 2685 | Phyllis, Phyliss Eileen | Mcnamara, Mc Namara, O'Hara | 1920s | II | 1 1 6 4, 1 1 6 8, |
| 1984 | Poll (?) | O'Hara | IR | CORK ? | 829 |
| 879 | Polly | O'Hara | 1790 ? | KY | IRELAND | 308 |
| 975 | Press, Preston, Presley | O'Hara | 1871 | KY | 361, 362 |
| 566 | Priscilla | Cox, O'Hara | 1800 ?, 1850 | KY, GA | 175, 295 |
| 563 | Professor | O'Hara | 1838 | GA | 175 |
| 1992 | R., B. | O'Hara | PA ? | 830 |
| 548 | Rachel | Slaughter, O'Hara | 1827, 1861 | FL | 164, 194, 197 |
| 47 | Ralph | O'Hara | 1850 | NY | 107 |
| 1782 | Ralph | O'Hara | 1814, 1892 | NY | 784, 883, 901 |
| 80 | Ray | O'Hara | PA | 021 |
| 600 | Raymond | O'Hara, O'Hora | PA | 184 |
| 2654 | Raymond | O'Hara | 1883-01-09; 1901, 1919, | ON | 1 1 4 2, 1 1 4 9, 1 1 5 0, |
| 2222 | Raymond | O'Hara | IR, US | SLIGO | 948 |
| 209 | Raymond | O'Harrah | OH | 046 |
| 2093 | Raymond, Jr. | O'Hara | 1923; 2000-12-03 | IL, NM | 867 |
| 608 | Raymond, Paul | O'Hara | 1919-01-16, 1985-07-06 | PA | 384, 385 |
| 2091 | Raymond, Sr. | O'Hara | c.1900, 1981 | IL, NM | 867 |
| 2067 | Rebecca | Kelly, O'Hara | 1863, 1872 | IR | ANTRIM | 843 |
| 721 | Rebecca | O'Harrah | 1845 | PA | 241 |
| 1431 | Rebecca, Louisa | Foy, O'Hara | 1776, 1860 | SC, GA ? | 698 |
| 1552 | Rhoda | Lindsey, O'Hara | c. 1859 | IN | 699 |
| 94 | Rhoda | O'Hara, Lathrope | 1808 | 023 |
| 715 | Rhoda | O'Hara, Murphy | 1825-06-15 | NC, GA | IRELAND | 237 |
| 1779 | Rhoda | O'Hara | 1809 | NY | 784, 883, 901 |
| 1496 | Richard | O'Hara | PA | 659 |
| 2066 | Richard | O'Hara | 1863, 1872 | IR | ANTRIM | 843 |
| 2328 | Richard | O'Hara | 1922 | MN ? | 981 |
| 628 | Richard | O'Hara | NH ? | 189 |
| 2202 | Richard | O'Hara | 1868-02-18, 1881 | SL | 942, 955 |
| 1993 | Richard | O'Hara | 1912 | PA ? | 830 |
| 1505 | Richard, Charles | O'Hara | 1966-06-17 | PA | 659 |
| 1584 | Richard, J. | O'Hara | 1870-07-21; 1897-05-09; 1907-07-27 | MA | 701, 704 |
| 610 | Rita | O'Hara | PA | 384, 385 |
| 1424 | Rita | O'Hara, Cronin | ON | 607, 752 |
| 1650 | Robbie | O'Hara | IL | 768 |
| 1538 | Robert | O'Hara, Burke | 1820, 1861 | AU | IRELAND | 808, 809, 690 |
| 1542 | Robert | O'Hara | 1842 | NB | 692 |
| 1295 | Robert | O'Hara, O'Harah | 1800+ | PA | 541 |
| 2090 | Robert | O'Hara | 1901, 1902 | EN | 912 |
| 2351 | Robert | O'Hara | 997 |
| 1846 | Robert | O'Hara | 1873, 1878 | 790, 906, 910 |
| 1636 | Robert | O'Hara | PA | 727 |
| 2153 | Robert | O'Hara | 1830s ? | CN, US ? | IRELAND | 902, 909 |
| 1146 | Robert | O'Hara | 1895 | IR, EN | MAYO | 343, 469, 570 |
| 1176 | Robert | O'Hara | 1921-12-25 | OH | 495, 635, 637, 638 |
| 193 | Robert | O'Harrah | 1860-08-08 | OH | 046 |
| 2242 | Robert | O'Hara | 1876 | ON | 958 |
| 1227 | Robert | O'Hara | 1822-10-22 | ON ? | ENGLAND | 516 |
| 2268 | Robert | O'Hara | 1859 | AU | 974, 975 |
| 1535 | Robert | O'Hara | 1790 | IR | IRELAND | 808, 809, 690 ? |
| 1089 | Robert, A. | O'Hara | 1877-09 | IR | ANTRIM | 423 |
| 2683 | Robert, E. | O'Hara | 1842 ?, 1871 | US | IRELAND | 1158 |
| 1672 | Robert, Emmet | O'Hara | 1830s, 1840s, 1890s ? | IR, US, GA ? | ANTRIM ? | 858, 859, 903, 904, 907, 913 |
| 2022 | Robert, Emmett | O'Hara | 1830s ?, 1875, 1898 ? | GA | ANTRIM | 905, 908, 920 |
| 1646 | Robert, Erin | O'Hara | MI | 726 |
| 1752 | Robert, Gile | O'Hara | 1906 | NE | 781 |
| 1187 | Robert, Lee | O'Hara | 1899-09; 1908-11 | NE ? | 496 |
| 2411 | Robert, O. | O'Harra | 1874?, 1880+ | NY | 1 0 3 6, |
| 1043 | Robert, William | O'Hara | 1922-01-02; 1998-12-14 | CT, NY ? | 392, 616, 645 |
| 775 | Roger | O'Hara | 1855, 1931 | EN | SLIGO | 334 |
| 321 | Roger | O'Hara | IR ? | MAYO | 483 |
| 147 | Roger | O'Hara | 1857-01, 1861, 1862 | IR | MAYO | 477, 484, 508, 509, 549, 584, 631, 792 |
| 1239 | Roger | O'Hara | IR ? | MAYO | 517 |
| 1243 | Roger | O'Hara | 1882, 1924 | IR | SLIGO, MAYO | 518 |
| 1664 | Ronald | O'Hara | EN | 760, 780, 745, 816 |
| 1824 | Rory | O'Hara | 786 |
| 1765 | Rosa | O'Hara | NY | 783 |
| 1780 | Rosarrah, Rosan | O'Hara | 1809 | NY | 784, 883, 901 |
| 211 | Roscoe | O'Harrah | OH | 046 |
| 2053 | Rose | O'Hara, Cleary, Hall | 1872 | CT, NY | IRELAND | 837 |
| 2070 | Rose | Mulligan, O'Hara | 1900s | NY | SLIGO ? | 847 |
| 1848 | Rose | O'Hara | 1873 | ON | 884, 910, 923, 1 0 0 1, |
| 1609 | Rose | O'Hara | US | MAYO | 708 |
| 1619 | Rose | O'Hara | 1926(?)-08-23 | NY | 708 |
| 1402 | Rose | O'Hara | EN | 602 |
| 683 | Rose | McConville, O'Hara | 1830, 1848, 1857 | NY | ARMAGH | 214 |
| 1255 | Rose | O'Hara | EN | 528, 764, 811 |
| 2031 | Rose | O'Hara, McGuire | 1850 | CT | IRELAND | 836, 1 0 0 6, 1 0 4 4, |
| 1787 | Rose | O'Hara | PA, NJ | 785 |
| 2074 | Rose (2) | O'Hara | NY | 847 |
| 2094 | Rose, Ellen | O'Hara, Nash | 1873 | ON, NY | 871, 922 |
| 1217 | Rose, Ellen | O'Hara, Igoe | MAYO | 524 |
| 2429 | Rose, Rosa | O'Hara | 1850, 1852?, 1870+ | CT | 1 0 4 0, 1 0 4 1, |
| 1521 | Rose, Rosemary | Mims ?, O'Hara | 1915, 1920 | TX | 670 |
| 1788 | Roseann | O'Hara | 1999, 2000 ? | PA, NJ | 784 |
| 753 | Roseanna | O'Hara | 1888 | OH | 243 |
| 780 | Rosemarie | D'Angelo, O'Hara | 1920-06-14, 1989-08 | PA, NY | 270 |
| 1524 | Rosemary | O'Hara | 1942 ? | TX | 670 |
| 1326 | Ross | O'Hara | 1924 | ON, CA, MI | 562, 824 |
| 440 | Ross | O'Hara | ON | 123 |
| 1327 | Rou, Roy | O'Hara | ON | 562, 824 |
| 560 | Roy | O'Hara | 1900 | OK | 172, 173 |
| 655 | Roy | O'Hara | 1890 | ON | 238 |
| 441 | Roy | O'Hara | ON | 123 |
| 1751 | Roy | O'Hara | 1906 | NE | 781 |
| 1918 | Ruby | O'Hara | NY | 804 |
| 549 | Rufus, D. | O'Hara | 1871 | FL | 210, 211 |
| 1310 | Ruth | O'Hara | ON | 684 |
| 1594 | Ruth | O'Hara | MA | 701, 704 |
| 903 | Ruth | O'Hara, LeBlanc | 1894-03-31/ 1894-04-01; 1900, 1920, 1973-10 | LA | 320, 1 0 0 7, 1 0 2 3, 1 0 2 5, 1 0 2 6, 1 0 2 9, |
| 232 | Ruth | O'Hara, Taggart | 1905-01-20 | MO | 050 |
| 1509 | Ryan, James | O'Hara | 2000-04-28 | IL | 659 |
| 3 | Samuel | O'Hara | OH, IN | 081 |
| 1539 | Samuel | O'Hara, O'Harah | 1815, 1816 | PA | 691 |
| 1551 | Samuel | O'Hara | c.1859 | IN | 699 |
| 329 | Samuel | O'Hara | IN | 083 |
| 865 | Samuel | O'Hara | IN | 303, 944 |
| 2700 | Samuel | O'Hara | 1840s, 1850, 1860s | OH, IA | 1 1 7 9, 1 1 8 6, |
| 2448 | Samuel | O'Hara | 1969 | NZ | 1054 |
| 1961 | Samuel | O'Hara | c. 1780, 1857, 1863 | IR | CAVAN | 819 |
| 1513 | Samuel | O'Hara | 1850 | IN | 664 |
| 1548 | Samuel, Charles ?, Tipton | O'Hara | c. 1859, 1883-09-19, 1924 | IN, WA | 699, 1 1 6 0, |
| 1541 | Sara | O'Hara, Conway | 1842, 1870 | NB | 692 |
| 2692 | Sara | O'Hara | 1850s, 1860s | OH, IA ? | 1 1 7 2, |
| 263 | Sarah | O'Hara | 1861 | AU | 057 |
| 2319 | Sarah | O'Hara, Quinn | 1865 | PA ? | 981 |
| 324 | Sarah | Baker, O'Hara | 1860-08-16; 1861-07-29 | IA | 079, 979 |
| 337 | Sarah | Logan, O'Hara | IN | 081, 082 |
| 868 | Sarah | O'Hara | 1869-06-15, 1797 ? | IR | ANTRIM | 356 |
| 1141 | Sarah | Campbell, O'Harrow, O'Hair | KY ? | 634, 458 |
| 2697 | Sarah | Baker, O'Hara, O'Harra | 1850, 1860-08-16 | IA | 1 1 7 9, 1 1 8 5, |
| 2699 | Sarah | O'Hara, O'Harra, Miller | 1853-03-23 | OH, IA | 1 1 7 9, 1 1 8 5, |
| 667 | Sarah | O'Hara | 1913 | PA | 202 |
| 1952 | Sarah | O'Hara, McAulay | 1860 | SL | 806 |
| 2729 | Sarah | Wilkins, O'Hara | IL, WI | 1 1 9 0, |
| 1967 | Sarah | O'Hara, O'Hara | IR, AU | 819 |
| 199 | Sarah | O'Harrah | 1860-08-08 | OH | 046 |
| 206 | Sarah | O'Harrah | OH | 046 |
| 720 | Sarah | O'Harah | 1842 | PA | 241 |
| 2518 | Sarah | O'Hara | 1835, 1860+ | NY | IRELAND | 1 0 8 2, |
| 2009 | Sarah | Dibbit, O'Hara | 1822, 1834 | IR | IRELAND | 835 |
| 2013 | Sarah | O'Hara | 1859, 1946 | MA | IRELAND | 835 |
| 2298 | Sarah | O'Hara | 1865, 1942 | PA | 981 |
| 255 | Sarah | O'Hara | 1855 | NY, WI | 053 |
| 1544 | Sarah (2) | O'Hara | NB | 692 |
| 2339 | Sarah ? | O'Hara | SL | 994 |
| 856 | Sarah Jane | Early, O'Hara | 1845-03-20 | AL, IN ? | 303 |
| 1355 | Sarah, A. | O'Hara | WI ? | 598, 600 |
| 1196 | Sarah, A. | O'Hara | 1880-09; 1900, 1910, 1920 | IA, UT, WY | 599 |
| 365 | Sarah, Ann | McCaffrey, O'Hara | 1816, 1871 | QB | 091 |
| 638 | Sarah, Ann | McCaffrey | 1816, 1840, 1849 | ON, QB | 351 |
| 395 | Sarah, Ann | O'Hara ?, McMinn, MacKay | 1901 | CN, AU | ANTRIM | 104 |
| 1971 | Sarah, Ann | O'Hara, Scott | 1845, 1868, 1871, 1891 | EN | DUBLIN | 820, 822, 823 |
| 587 | Sarah, Cecelia | O'Hara | 1890 | MA | 179 |
| 815 | Sarah, E. | O'Hara | 1854 | IR ? | ANTRIM | 290, 319 |
| 307 | Sarah, Elizabeth | O'Hara, Wheeler | 1851, 1875 | WI, IA | 219, 418 |
| 14 | Sarah, Helen | O'Hara | 1870, 1880 | EN | MAYO | 486 |
| 223 | sarah, helen | O'Hara | MAYO | 485 |
| 977 | Sarah, Jane | Rice, O'Hara | 1877 | VA, KY | 361 |
| 1777 | Sarah, Sally | O'Hara | 1804, 1875 | NY | 784, 883, 901 |
| 1986 | Sarah, Sara | O'Hara | IR | CORK ? | 829 |
| 1845 | Sean | O'Hara | 786 |
| 1473 | Sean | O'Hara ? | c. 1950 ? | EN | 658 |
| 1840 | Selma | Rerrie, O'Hara | 786 |
| 1174 | Serena | O'Hara | KY | 495, 637 |
| 1162 | Shannon | O'Hara | NB | 493 |
| 1940 | Shannon, Eve | O'Hara | 1980-07-09; 2003+ | NY | 804 |
| 1947 | Shaun | O'Hara | 1951-06-20; 2003+ | NY | 804 |
| 295 | Sheela | O'Hara, O'Neill | 1600+ | IR | ANTRIM | 069 |
| 1872 | Shevonne | O'Hara | PA ? | 794 |
| 1716 | Shevonne | O'Hara | PA | 762 |
| 1456 | Simon | O'Hara | 1850 ? | NY | MAYO ? | 650 |
| 1110 | Simon, Samuel | O'Hora, O'Hara | 1850, 1880 ? | NY | 436 |
| 105 | Sirenius | O'Hara | NY | 026 |
| 1838 | Sonny | O'Hara | 786 |
| 297 | Sorley | O'Hara | 1600+ | IR | ANTRIM | 069 |
| 2649 | Stanley | O'Hara | 1880-07-30 (20?); 1901+ | ON | 1 1 4 1, 1 1 4 9, 1 1 5 0, |
| 2441 | Stanley | O'Hara | 1918-09; 1909-09; 1962 | NS | 1 0 4 6, |
| 2239 | Stella | O'Hara | 1878-09-01 | 956 |
| 853 | Stephen | O'Hara | 1850 ? | NY | LEITRIM ? | 306 |
| 1904 | Stephen | O'Hara | 1859, 1883-06-29 | NY | 804 |
| 1151 | Stephen | O'Hara | 1862 | OH | SLIGO | 480 |
| 391 | Stephen ? | O'Hara | US | 122 |
| 2068 | Stephen, George | O'Hara | 1916, 1980 | 842, 844 |
| 1925 | Stephen, V. | O'Hara | 1884; 1963-09-24 | NY | 804 |
| 847 | Steve | O'Hara | ON, PA, NJ ? | 298, 305 |
| 2253 | Steven | O'Hara | 1879 | NY | 961 |
| 1844 | Steven, Paul | O'Hara | 786 |
| 1328 | Stewart | O'Hara | ON | 562, 824 |
| 443 | Stuart | O'Hara | ON | 123 |
| 1291 | Susan | O'Hara | 1878 ?, 1881 | SL | 538, 539 |
| 2695 | Susan | O'Hara, Robinson ? | 1811, 1829?, 1850, 1860 | PA, IA | 1 1 7 9, 1 1 8 3, 1 1 8 4, 1 1 8 6, |
| 2709 | Susan | O'Hara, Gallagher | 2004 | IR ? | TYRONE | 1 1 8 8, |
| 1699 | Susan | O'Hara, Kelly | 1876 | 838 |
| 2477 | Susan | O'Hara | 1863, 1930 | OH | 1 0 6 4, |
| 688 | Susan | O'Hara | 1857 | NY | 214 |
| 1477 | Susan | Mulholland, O'Hora. O'Hara ? | 1870 | PA ? | IRELAND | 659 |
| 458 | Susan | McGeough, O'Hara | PA, MA ? | 129 |
| 2015 | Susan | O'Hara | 1865, 1931 | NY, PA | IRELAND ? | 835 |
| 1012 | Susan | O'Hara | NY ? | 369 |
| 473 | Susan, Susanna | Higgins, O'Hara | 1855, 1864 | IR | SLIGO | 143 |
| 2717 | Susan, Valleta | O'Hara | 1850 ? | 1 1 8 9, |
| 2001 | Susana | O'Hara | 1928 | NY | 833 |
| 1386 | Susanna | O'Hara | IR, SL | ANTRIM | 592 |
| 888 | Susanna | O'Hara | 1851 ? | IR, SL | ANTRIM | 309 |
| 2204 | Susen, Susan, Elisabeth | O'Hara | 1871-06-04, 1881 | SL | 942, 955 |
| 190 | Susie | O'Hara, O'Leary | 1923, 1952 | MN, IA | 043 |
| 15 | Suzanna | O'Harra, Hull | 1806 | IL | 002 |
| 552 | Suzanna | O'Hara | PA ? | 313 |
| 192 | Suzanna | Schall, Shawl, O'Harrah | 1896 | OH | 046, 268, 311, 312 |
| 1811 | Suzanne | O'Hara | 786 |
| 754 | Sylvester, Edward | O'Hara | 1891 | OH | 243 |
| 1037 | Teighe | O'Hara | 1616 | IR | SLIGO | 378 |
| 2076 | Teresa | O'Hara | 2002 | NY | 847 |
| 2755 | Teresa | O'Hara | 1851, 1860+ | PA | 1 2 1 0, |
| 1516 | Thaddeus, Thady | O'Hara | 1890s, 1917 ? | EN | SLIGO | 713 |
| 1866 | Thelma | Miller, O'Hara | PA ? | 794 |
| 1711 | Thelma | Miller, O'Hara | PA | 762 |
| 564 | Theodore | O'Hara | 1820 ?, 1822-02-11 ?, 1867-06-06 | KY, AL | 175, 292, 293, 294, 295 |
| 1178 | Theresa | Klosterman, O'Hara | 1921-12-25 | OH | 495, 635, 637, 638 |
| 759 | Theresa | O'Hara, Mahoney | 1870 | NJ | 255 |
| 1899 | Theresa, M. | Kavanaugh, O'Hara | 1875, 1909-02-24 | NY | 804 |
| 1643 | Therese | O'Hara | PA | 728, 724 |
| 163 | Thomas | O'Hara, O'Harah | c. 1852, 1855?, 1880,1888, 1891 | NY | 374, 986, 1 0 6 1, 1 0 6 2, |
| 1481 | Thomas | O'Hora, O'Hara ? | PA ? | 659 |
| 1487 | Thomas | O'Hora, O'Hara | PA | 659 |
| 475 | Thomas | O'Hara | SLIGO | 143 |
| 2459 | Thomas | O'Hara | 1866 | AU | 1 0 5 7, |
| 512 | Thomas | O'Hara | 1866-01-22 | IR | MAYO | 584 |
| 10 | Thomas | O'Hara | 1845 | IA | CAVAN | 004 |
| 2059 | Thomas | O'Hara | 1900 | MA | 839 |
| 19 | Thomas | O'Hara | 1845 | US | 004 |
| 1302 | Thomas | O'Hara | 1851?; 1873-10-28; 1878; 1905 | ON | IRELAND ? | 558, 644, 790, 884, 919, 923, 938, 997, 1 0 0 1, 1 0 2 0, 1 0 3 1, |
| 23 | Thomas | Hara | 1871-02-24 | DERRY | 017 |
| 2327 | Thomas | O'Hara | 1920 | MN ? | 981 |
| 24 | Thomas | Hara | 1871 | DERRY | 017 |
| 2072 | Thomas | O'Hara | NY | 847 |
| 2587 | Thomas | O'Hara | c. 1855, 1880, | OH, IL | 1 1 0 6, |
| 287 | Thomas | O'Hara | 1878 | EN | 743, 744, 745, 760, 748, 817 |
| 2594 | Thomas | O'Hara | 1818, 1870, | IL | IRELAND | 1 1 0 5, |
| 2598 | Thomas | O'Hara | 1859, 1870, | IL | IRELAND | 1 1 0 5, |
| 2095 | Thomas | O'Hara | 1873 | ON, NY | 871, 922 |
| 2100 | Thomas | O'Hara | NY, CT ? | 880 |
| 1850 | Thomas | O'Hara | 1866-11-21 | IR ? | MAYO | 792 (477, 483, 484, 508, 509, 519, 520, 549, 584, 631) |
| 2623 | Thomas | O'Hara | 1854, 1870 | OH, IL | 1 1 0 4, |
| 580 | Thomas | O'Hara | 1852-08-05, 1880-10-10 | MA | ENGLAND | 179 |
| 2628 | Thomas | O'Hara | 1860 ?, | GA | 1 2 3 2, |
| 1606 | Thomas | O'Hara | IR, AU | MAYO | 708 |
| 2636 | Thomas | O'Hara | 1850 | ON ?,MI ?,NY | LEITRIM, MAYO ? | 1 1 0 1, |
| 1101 | Thomas | O'Hara | EN | 432 |
| 1103 | Thomas | O'Hora, O'Hara | 1850, 1880 | NY | MAYO | 436 |
| 2386 | Thomas | O'Hara | c. 1865, 1882, 1940 | QB | MAYO | 1 0 2 1, 1 0 8 1, |
| 851 | Thomas | O'Hara | 1850 ? | NY | LEITRIM ? | 306 |
| 1109 | Thomas | O'Hora, O'Hara | 1850, 1880 | NY | 436 |
| 2139 | Thomas | O'Hara | 1600s | IR | IRELAND | 939 |
| 1893 | Thomas | O'Hara | PA | 799 |
| 107 | Thomas | O'Hara | 1816 | ON | IRELAND | 229 |
| 2155 | Thomas | O'Hara | 1829 | ON | 926 |
| 1644 | Thomas | O'Hara | PA | 728, 724 |
| 2157 | Thomas | O'Hara | 1863-08-23 | ON | 926 |
| 2158 | Thomas | O'Hara | 1900-08-08 | ON | 926 |
| 112 | Thomas | O'Hara | 1848 | ON | 239 |
| 2161 | Thomas | O'Hara | c.1905 | ON | 926 |
| 639 | Thomas | O'Hara | 1819, 1892 | ON | 238, 504, 505 |
| 642 | Thomas | O'Hara | 1848 | ON | 238 |
| 1155 | Thomas | O'Hara | 1866-11-21 | IR | MAYO | 519 |
| 2189 | Thomas | O'Hara | 1846 | NY | 935 |
| 919 | Thomas | O'Hara | 1951-08-08 | US | 324 |
| 152 | Thomas | O'Hara | NY | 042 |
| 664 | Thomas | O'Hara | 1800 | ON | 663 |
| 1432 | Thomas | O'Hara | 1900s ? | OH | SLIGO, MAYO | 626 |
| 1437 | Thomas | O'Hara | 1866-11 | IR | MAYO | 631 |
| 2473 | Thomas | O'Hara | 1851, 1870 | NY | 1 0 5 9, 1 0 6 0, |
| 1450 | Thomas | O'Hara | 1850 ? | NY | MAYO | 650 |
| 939 | Thomas | O'Hara | 1855, 1858 | EN, US | IRELAND | 341 |
| 1455 | Thomas | O'Hara | 1850 ? | NY | MAYO ? | 650 |
| 1462 | Thomas | O'Hara | 1824 ?, 1860 | OH | IRELAND | 657 |
| 1725 | Thomas | O'Hara | 1861 | ON | 770 |
| 2495 | Thomas | O'Hara | 1815 ?, 1822 ?; 1843-05-29; 1860, c.1864 | QB, NY | MAYO, LEITRIM | 1 0 7 1, 1 0 7 2, 1 0 7 4, 1 0 7 5, 1 0 7 6, 1 0 7 8, 1 1 1 9, 1 1 2 1, 1 0 8 2, 1 0 8 3, 1 0 9 3, 1 0 9 4, 1 0 9 5, 1 0 9 6, 1 1 0 0, 1 1 0 2, 1 1 0 3, 1 1 2 1, 1 1 2 2, 1 1 2 4, 1 1 3 1, 1 1 3 4, 1 1 3 7, 1 1 4 4 ?, |
| 966 | Thomas | O'Hara | 387 |
| 986 | Thomas | O'Hara | 1840, 1858, 1888 | ON | IRELAND | 766, 767, 769, 770 |
| 1756 | Thomas | O'Hara | 1863 | ON?, NY | 783 |
| 235 | Thomas | O'Hara | 1816 | ON | IRELAND | 228, 663, 666 |
| 239 | Thomas | O'Hara | ON | 228, 666 |
| 497 | Thomas | O'Hara | 1852 | IR | SLIGO | 654 |
| 506 | Thomas | O'Hara | IR ? | MAYO | 146 |
| 1963 | Thomas (1) | O'Hara | IR | CAVAN | 819 |
| 1966 | Thomas (2) | O'Hara | IR, AU | 819 |
| 2510 | Thomas (2) | O'Hara | 1877?, 1880 | MO | 1 0 8 5, 1 0 8 6, 1 0 9 7, |
| 1968 | Thomas (3) | O'Hara | IR ? | 819 |
| 831 | Thomas, Edward | O'Hara | 1875-06-26 | ON, PA ? | 305 |
| 585 | Thomas, Edward | O'Hara | 1886 | MA | 179 |
| 382 | Thomas, Edward | O'Hara | 1875 | ON | 192 |
| 385 | Thomas, Edward | O'Hara | 1875-06-26, 1901-04-16 | ON, AZ | 122 |
| 1186 | Thomas, Edward | O'Hara | 1906-08-31; 1971-12-25 | NE, IA | 496 |
| 451 | Thomas, Edward | O'Hara | 1875-06-26 | ON, NY, PA, KS, CA | 128 |
| 2500 | Thomas, Jefferson | O'Hara | 1815, 1822, 1851-06-30, 1870+ | NY, MO | 1 0 7 2, 1 0 8 2, 1 0 8 4, 1 0 9 3, 1 0 9 4, 1 0 9 5, 1 1 0 0, 1 1 2 1, 1 1 2 2, 1 1 2 5, 1 1 2 6, 1 1 2 7, 1 1 2 8, 1 1 3 0, 1 1 4 6, |
| 2021 | Thomas, Joseph | O'Hara | 1881, 1957 | NY | 835 |
| 538 | Thomas, L. | O'Hara, Ohara | 1850 | ME | IRELAND | 159 |
| 165 | Thomas, M. | O'Hara | NY | 374 |
| 1054 | Thomas, Patrick | O'Hara | 1900?, 1960, 1961 | NJ | SLIGO | 391 |
| 1504 | Thomas, Paul | O'Hara | 1963 | PA | 659 |
| 454 | Thomas, Peter | O'Hara | 1884-03-12 | OH | 126 |
| 727 | Thomas, S. | O'Hara | 1884 | FL ? | 241 |
| 264 | Thos | O'Hara | 1862 | AU | 057 |
| 2507 | Thos, Tom, Thomas ? | O'Hara | 1852?,1880 | NY, MO? | 1 0 8 5, 1 0 8 6, 1 0 9 7, |
| 1804 | Tim, Leslie, Vincent | O'Hara | 786 |
| 544 | Timothy | O'Hara | MN | 163 |
| 1503 | Timothy, Paul | O'Hara | 1963 | PA | 659 |
| 799 | Tom | O'Hara | 1853 | ON, SK ? | 282, 287 |
| 89 | Tom | O'Hara | ON | 213 |
| 634 | Tom | O'Hara | 1790? | ON | CLARE, CORK | 195, 640, 238, 663 |
| 635 | Tom | O'Hara | 1828 | ON | 195, 238, 663 |
| 1428 | Tom | O'Hara | 1980s | CO | 611 |
| 1653 | Tommy | O'Hara | IL | 768 |
| 562 | Tomzon, Thompson, Tompsen, Ann, Ayn | O'Hara, Grant | 1830, 1848, 1850, 1900 | KY, GA | 175, 295 |
| 378 | Ton, Anthony | O'Hara | 1890 | PA | MAYO, SLIGO | 133 |
| 1590 | Ursula | O'Hara | MA | 701, 704 |
| 807 | Valentine | O'Hara | 1865 | ON, SK ? | 282, 287 |
| 2162 | Valentine | O'Hara | c. 1905 | ON | 926 |
| 2449 | Valerie | Wilson, (O'Hara) | 1969 | NZ | 1054 |
| 2679 | Van, M. | O'Hara | c.1913, 1930+ | MO | 1 1 5 1, 1 1 5 7, |
| 2511 | Vaughn | O'Hara | 1878?, 1880 | MO | 1 0 8 5, 1 0 8 6, |
| 2667 | Veronica | O'Hara | 1 1 4 3, |
| 2179 | Veronica | Nicholson, O'Hara | 1918 ? | NY | 931 |
| 1421 | Veronica | O'Hara, Reilly | EN ? | 606, 608 |
| 1624 | Vincent | O'Hara | 1918-07-25 | NY | 720 |
| 2176 | Vincent | O'Hara | 1917 | NY | 930 |
| 929 | Violet ? | O'Hara | SL | 464 |
| 2668 | Virgina | O'Hara | 1 1 4 3, |
| 1855 | Walter | O'Hara | PA ? | 794 |
| 2658 | Walter | O'Hara | 1903-08-05; 1979-04 | MO | 1 1 4 3, 1 1 5 1, 1 1 5 4, 1 1 5 7, |
| 2672 | Walter | O'Hara | 1904-05-05; 1949-06 | CA, MO | 1 1 5 1, 1 1 5 7, |
| 1218 | Walter | O'Hara | 1822, 1826, 1860, 1871 | ON | ENGLAND | 516 |
| 1223 | Walter | O'Hara | ON ? | ENGLAND ? | 516 |
| 1867 | Walter Jr. | O'Hara | PA ? | 794 |
| 1861 | Walter Sr. | O'Hara | PA ? | 794 |
| 1703 | Walter, C. | O'Hara | PA | 762 |
| 1712 | Walter, C. Jr. | O'Hara | PA | 762 |
| 2671 | Walter, J. (?) | O'Hara | 1883, 1884, 1910, 1920, | NY, MO | 1 1 5 2, |
| 2669 | Walter, Jr. | O'Hara | 1 1 4 3, |
| 2675 | Walter, V. | O'Hara | c.1905, 1930+ | MO | 1 1 5 1, 1 1 5 7, |
| 1296 | Wesley | O'Hara, O'Harah | 1800+ | PA | 541 |
| 51 | Wilder | O'Hara | 1850 | NY | 107 |
| 2749 | Wilfred, Bill, J. | O'Hara | c. 1924 | NJ | 1 2 0 1, 1 2 0 3, 1 2 0 6, |
| 1799 | Wilfred, Harold | O'Hara | 786 |
| 207 | Wiliam | O'Harrah | OH | 046 |
| 1044 | William | O'Hara | 618 |
| 1792 | William | O'Hara | 1875, 1980 | 786 |
| 2304 | William | O'Hara | 1888-01; 1918 | MN | 981 |
| 779 | William | O'Hara | 1916-12-13, 1982-05 | PA, NY | 270 |
| 2315 | William | O'Hara | 1895 | PA ? | 981 |
| 1039 | William | O'Hara | 1850, 1870, 1930s, 1940s | NY, MA | 379, 393, 445, 995 |
| 272 | William | O'Hara | 1827 | US? | ROSCOMMON | 100, 101 |
| 274 | William | O'Hara | 1827 | US? | 100, 101 |
| 2323 | William | O'Hara | 1912, 1942 | MN | 981 |
| 288 | William | O'Hara | 1881 | EN | 743, 744, 745, 760, 748, 817 |
| 802 | William | O'Hara | 1858 | ON, SK ? | 282, 287 |
| 1062 | William | O'Hara | 1843, 1845 | EN | SLIGO | 401 |
| 1849 | William | O'Hara | 1878, 1880 ? | ON | (558), 644, 884, 910, 923, 1 0 0 1, 1 0 3 1, |
| 1085 | William | O'Hara | 1866-05 | IR | ANTRIM | 423 |
| 1345 | William | O'Hara | 1850? | NY | IRELAND | 581 |
| 331 | William | O'Hara | OH, IN | 083 |
| 79 | William | O'Hara | PA | 021 |
| 592 | William | O'Hara, O'Hora | 1855 | PA | 184, 284, 384 ?, 385 ? |
| 1365 | William | O'Hara | 1943 | IR, EN | LIMERICK | 583 |
| 1877 | William | O'Hara | WI, MD ? | 797 |
| 599 | William | O'Hara, O'Hora | PA | 184 |
| 855 | William | O'Hara | 1820, 1821, 1845-03-20, 1899-01-09 | AL, IN | IRELAND | 303 |
| 2392 | William | O'Hara | 1918 ?, 1920+ | LA | 1 0 2 6, |
| 2397 | William | O'Hara | 1856, 1910+ | NY, MA | 1 0 3 4, 1 0 3 5, |
| 862 | William | O'Hara | IN | 303 |
| 2143 | William | O'Hara | 1837 | IR | ANTRIM, DERRY ? | 895 |
| 609 | William | O'Hara | PA | 384, 385 |
| 2404 | William | O'Harra | 1856?, 1857?, 1858?, 1880+ | NY | 1 0 3 6, 1 0 3 7, 1 0 3 8, |
| 1126 | William | O'Hara | NY | 452 |
| 368 | William | O'Hara | 1880 | ON | 097 |
| 2166 | William | O'Hara ? | ON, NS ? | 925 |
| 120 | William | O'Hara | 1867 | ON | 239 |
| 1408 | William | O'Hara | 1945 | CA ? | 603 |
| 1666 | William | O'Hara | EN | 760, 780, 745, 816 |
| 2437 | William | O'Hara | 1875?, 1880+ | CT | 1 0 4 2, |
| 905 | William | O'Hara | 1829,1851-09-21, 1857 | EN, NZ | ENGLAND | 323 |
| 2186 | William | O'Hara | 1867 | NY | 932 |
| 651 | William | O'Hara | 1867, 1890 ? | ON | 238 |
| 908 | William | O'Hara | 1919, 1934 | US | 324 |
| 2188 | William | O'Hara | 1878; 1942-12-24 | ON ? | 934 |
| 653 | William | O'Hara | 1890 | ON | 238 |
| 916 | William | O'Hara | US | 324 |
| 155 | William | O'Hara | 1882, 1960 | NY | 042 |
| 158 | William | O'Hara | c. 1840 | NY | IRELAND | 374, 986 |
| 2733 | William | O'Hara | 1850s, 1860s | NS | 1 1 9 5, |
| 1969 | William | O'Hara | IR ? | 819 |
| 1983 | William | O'Hara | 1850 ?, 1880, 1900+ | IR, BC | CORK ? | 829 |
| 1757 | William | O'Hara | 1864 | NY | 783 |
| 494 | William | O'Hara | 1843 | IR | SLIGO | 654 |
| 500 | William | O'Hara | 1838, 1860 | IR | SLIGO | 654 |
| 1270 | William | O'Hara | 1908 | EN | 529 |
| 1017 | William | O'Hara | 1839, 1917-03 | NS | IRELAND | 371 |
| 1602 | William ? | O'Hara | IR | MAYO | 708 |
| 2064 | William John | O'Hara | 1872-05-02 | US | ANTRIM | 843 |
| 1871 | William Jr. | O'Hara | PA ? | 794 |
| 1715 | William Jr., Bill | O'Hara | 2002 | PA | 762 |
| 1714 | William Sr | O'Hara | PA | 762 |
| 1869 | William Sr. | O'Hara | PA ? | 794 |
| 2003 | William, B. | O'Hara | 1879 | MA | 834, 1 1 9 3, |
| 2742 | William, Bernard | O'Hara | 1877-03-02; 1910-03-05; | MA | 1 1 9 9, |
| 2385 | William, E. | O'Hara, Stubbs??? | 1800s | FL | WESTMEATH | 1 0 1 9, |
| 278 | William, Edward | O'Hara | 1901-01-31, 1973-06-06 | PA | 061, 155 |
| 1615 | William, Edward | O'Hara | 1916-10-02; 1981-08-07 | NY | 708 |
| 1591 | William, Francis | O'Hara | 1876-07-13; 1904-09-04; 1967-05-09 | MA, ME | 701, 704 |
| 921 | William, Francis | O'Hara | US ? | 779 |
| 1783 | William, Franklin | O'Hara | 1817, 1892 | NY | 784, 883, 901 |
| 1917 | William, H. | O'Hara | 1888-05-28; 1968-12 | NY | 804 |
| 1323 | William, Hartford, Buster ? | O'Hara | 1887 ?, 1918-04-08, 1920s | ON, MT | 562, 824 |
| 1537 | William, Henry | O'Hara | c. 1844 | IR, AU | IRELAND | 808, 809, 690 ? |
| 1041 | William, Henry | O'Hara | 1897-10-26; 1940-08-12 | CT, NY ? | 392, 616, 645 |
| 219 | William, Henry | O'Hara | 1868-01-29 | OH | 047 |
| 2006 | William, Homer, III | O'Hara | 1980-05-06 | MA | 834, 1 1 9 3, 1 1 9 4, 1 1 9 9, |
| 2005 | William, Homer, Jr. | O'Hara | 1941-02-06 | MA | 834, 1 1 9 3, 1 1 9 4, 1 1 9 9, |
| 1045 | William, Homer, Sr. | O'Hara | 1910-03-05; 1991-04-11 | MA | 618, 1 1 9 3, 1 1 9 4, 1 1 9 9, |
| 1933 | William, J. | O'Hara | 1915-05-10; 1947-07-05; 1973; 2002+ | NY | 804 |
| 1937 | William, J. | O'Hara | 1949-09-05; 1971-06-19; 2003+ | NY | 804 |
| 2389 | William, J. | O'Hara | 1966-04-01 | NY | 1 0 2 2, 1 0 5 3, 1 0 5 5, 1 0 5 6, |
| 2396 | William, J. | O'Hara | 1875?, 1930 | MA | 1 0 3 3, |
| 1660 | William, J. | O'Hara | 1913, 1946 | PA | 741 |
| 267 | William, John | O'Hara | 1997-06-29 | AU | 057 |
| 866 | William, John | O'Hara | IR | ANTRIM | 356 |
| 1785 | William, Joseph | O'Hara | 1905-03-06 | PA, NJ | ROSCOMMON | 785 |
| 901 | William, Joseph, Willie ? | O'Hara | 1891-01; 1891-02-14 ?; 1900, 1920, 1979-11 | LA | 320, 1 0 0 7, 1 0 2 3, 1 0 2 5, 1 0 2 6, 1 0 2 9, |
| 279 | William, P. | O'Hara | 1845, 1870, 1922 | CA | ENGLAND | 186, 187, 747 |
| 832 | William, Patrick | O'Hara | 1865, 1875 | ON | 305 |
| 383 | William, Patrick | O'Hara | 1854 | ON | MAYO | 122 |
| 450 | William, Patrick | O'Hara | 1845, 1854 | IR, ON | MAYO | 128 |
| 2676 | William, R. | O'Hara | c. 1907, 1930+ | MO | 1 1 5 1, 1 1 5 7, |
| 1422 | William, Richard | O'Hara | 1880, 1957 | ON | IRELAND ? | 607, 752, 766 |
| 2105 | William, T. | O'Hara | IA, IN | 881, 949 |
| 2233 | William, T. | O'Hara | 1870-10-09; 1890; 1948-09-09 | 956 |
| 2036 | Willie | O'Hara | CT ? | 836, 1 0 0 6, 1 0 4 4, |
| 1484 | Winfred, T. | Kelly, O'Hora, O'Hara ? | 1873, 1892, 1917 | PA | 659 |
| 1692 | Winifred | O'Hara | NY | 815 |
| 1694 | Winifred | Dolan, O'Hara | MAYO ? | 815 |
| 1697 | Winifred | O'Hara | OK ? | 815 |
| 2174 | Winnifred, Kathleen | Duffy, O'Hara | 2003+ ? | NB, NS | 929 |
| 269 | Wm | O'Hara | 1800 | US | IRELAND | 059 |
| 554 | Wm, Thomas | O'Hara | 1884, 1904, 1978 | IL, TX | 168 |
| 2466 | Wm, William | O'Hara | 1831?, 1839?, 1870 | NY | IRELAND | 1 0 5 8, 1 0 5 9, 1 0 6 0, |
| 2523 | Wm, William ?, H | O'Hara | 1844, 1860+ | NY | 1 0 8 2, |
| 166 | Wm., H. | O'Hara | NY | 374 |
| 2719 | Woodward | O'Hara | 1850 ?, | 1 1 8 9, |
| 2688 | Yvonne | O'Hara | 1 1 6 4, 1 1 6 8, |
| 2232 | Zelda | Prentice, O'Hara | 956 |
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