Surname List: Begins with O
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All surnames beginning with O, sorted alphabetically (total individuals):
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1. O'Brien (10) 2. O'Connell (8) 3. O'Connor (3) 4. O'Donnell (5) 5. O'Grady (4) 6. O'Hara (7) 7. O'Kelly (2) 8. O'Leary (1) 9. O'Maley (1) 10. O'Mara (1) 11. O'Neal (2) 12. O'Neill (29) 13. O'Reilly (1) 14. O'Sullivan (1) 15. O'Toole (5) 16. Oakes (2) 17. Oakley (7) 18. Oathout (1) 19. Oatman (4) 20. Oats (1) 21. Obenland (1) 22. Ober (4) 23. Oberle (1) |
24. Oberlin (1) 25. Oberly (1) 26. Obermaier (2) 27. Obermeier (8) 28. Occhibove (3) 29. Occhicone (1) 30. Oddis (2) 31. Oddy (1) 32. Odell (3) 33. Odgers (1) 34. ODyer (1) 35. Oelkrug (2) 36. Oesterling (2) 37. Oetinger (2) 38. Offley (1) 39. Ofner (2) 40. Ogborn (2) 41. Ogborne (1) 42. Ogden (4) 43. Ogilvy (1) 44. Ogle (1) 45. Ogoneck (1) 46. Oke (2) |
47. Okey (6) 48. Okowit (1) 49. Okun (2) 50. Olden (1) 51. Olds (2) 52. Oldt (15) 53. Olein (2) 54. Olejniczak (1) 55. Oliphant (6) 56. Oliquino (1) 57. Oliva (31) 58. Oliver (11) 59. Olkowski (3) 60. Ollweiler (4) 61. Olmstead (4) 62. Olnhausen (1) 63. Olson (4) 64. Olszewski (2) 65. Ombello (1) 66. Oncken (2) 67. Onderdonck (2) 68. Oneby (1) 69. Onofrio (4) |
70. Onorato (2) 71. Opdyke (1) 72. OPP (2) 73. Oppenhum ? (1) 74. Oppinger (1) 75. Ordway (1) 76. Orha (4) 77. Orihel (1) 78. Orlouski (1) 79. Ormstron (1) 80. Orodenker (2) 81. Orr (15) 82. Orsinger (2) 83. Orsini (3) 84. Orth (1) 85. Ortiz (2) 86. Orwig (6) 87. Osborn (23) 88. Osborne (2) 89. Osier (2) 90. Osinski (1) 91. Osman (1) 92. Osswald (1) |
93. Ostermayer (1) 94. Ostler (1) 95. Oswald (2) 96. Otero (4) 97. Otis (9) 98. Ott (1) 99. Ott?? (1) 100. Ottaviano (3) 101. Otte (1) 102. Otten (2) 103. Otteson (2) 104. Ouellet (1) 105. Ovelman (5) 106. Overdorf (2) 107. Overton (1) 108. Owen (7) 109. Owens (15) 110. Owle (1) 111. Ownbey (4) |