All surnames beginning with O, sorted alphabetically (total individuals):
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1. O Mahoney (1) 2. O'Boyle (2) 3. O'brian (1) 4. O'Brien (33) 5. O'Callaghan (1) 6. O'Connell (23) 7. O'Connor (13) 8. O'doherty (1) 9. O'Donnell (3) 10. O'Flahertey (1) 11. O'Flaherty (2) 12. O'Gorman (4) 13. O'Grady (2) 14. O'Hagan (1) 15. O'Halloran (2) 16. O'Hara (7) 17. O'Hare (3) 18. O'Keefe (1) 19. O'Keeffe (1) 20. O'Key (1) 21. O'Leary (2) 22. O'Malley (2) 23. O'meagher (3) 24. O'neal (1) 25. O'Neil (7) 26. O'Neill (20) 27. O'Reilly (5) 28. O'Rourke (1) 29. O'Shea (2) 30. O'Sullivan (2) 31. O'Toole (3) |
32. Oady (1) 33. Oak (1) 34. Oakden (2) 35. Oake (1) 36. Oakenfold (5) 37. Oakes (4) 38. Oakey (9) 39. Oakley (30) 40. Oaks (2) 41. Oaten (3) 42. Oates (12) 43. Oatis (1) 44. Oats (8) 45. Oatu (1) 46. Oatway (2) 47. O’Toole (1) 48. Ober (4) 49. Obern (3) 50. Oberzanek (2) 51. Oborn (17) 52. Obron (1) 53. Ockey (2) 54. Oddy (28) 55. Odell (31) 56. Odem (1) 57. Odgers (19) 58. Odone (2) 59. Oedingen (1) 60. of Aquitaine (1) 61. of Castile (1) 62. of Germany (1) |
63. Offer (8) 64. Offord (4) 65. Offutt (1) 66. Ogden (10) 67. Ogg (1) 68. Ogilvie (13) 69. Ogilvy (2) 70. Ogley (2) 71. Ohlson (10) 72. Olafsdatter (1) 73. Old (9) 74. Oldaker (1) 75. Oldale (3) 76. Olden (2) 77. Oldfield (10) 78. Oldham (1) 79. Olding (9) 80. Oldland (59) 81. Oldrey (1) 82. Oldring (6) 83. Olejnikac (5) 84. Oler (1) 85. Olesdatter (1) 86. Olfsson (1) 87. Oliver (180) 88. Olsen (3) 89. Olson (3) 90. Olsson (4) 91. Onions (11) 92. Onslow (2) 93. Opatowski (5) |
94. Oppenheimer (6) 95. Oram (83) 96. Orange (1) 97. Orchard (31) 98. Ordner (1) 99. Orford (3) 100. Orledge (1) 101. Orman (9) 102. Orme (37) 103. Ormond (2) 104. Ormsby (8) 105. Orr (3) 106. Ortlip (1) 107. Orton (10) 108. Ory (1) 109. Osborn (8) 110. Osborne (63) 111. Osell (1) 112. Osland (1) 113. Osment (15) 114. Osmond (4) 115. Ossub (1) 116. Osterhout (2) 117. Ostime (2) 118. Ostle (1) 119. Ostlife (2) 120. Ostlund (1) 121. Oswin (3) 122. Otes (3) 123. Ott (1) 124. Ottaway (1) |
125. Otter (29) 126. Ottewell (1) 127. Otto (2) 128. Oughten (1) 129. Oughton (3) 130. Outlaw (11) 131. Outram (1) 132. Outrim (1) 133. Ovenden (2) 134. Overall (5) 135. Overbury (2) 136. Overend (2) 137. Overfield (1) 138. Overman (1) 139. Overson (1) 140. Overton (2) 141. Overy (6) 142. Oviatt (1) 143. Owen (111) 144. Owens (93) 145. Owers (10) 146. Owsin (1) 147. Oxborow (1) 148. Oxborrow (36) 149. Oxbury (1) 150. Oxland (3) 151. Oxley (4) 152. Oxspring (2) 153. Ozsoydan (2) 154. Ozzard (3) |
