Surname List: Begins with O


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All surnames beginning with O, sorted alphabetically (total individuals):

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1. O'Conner (1)
2. O'Donohue (1)
3. O'Neill (1)
4. O'Shea (1)
5. Olliffee (1)
6. Orwin (1)
7. O'Brien (14)
8. O'Connell (3)
9. O'Conner (1)
10. O'Connor (8)
11. O'Doherty (10)
12. O'donnell (10)
13. O'donohoe (2)
14. O'Dwyer (1)
15. O'Gorman (7)
16. O'grady (3)
17. O'Hagan (1)
18. O'Halloran (3)
19. O'hara (3)
20. O'Hare (1)
21. O'Hehir (5)
22. O'Keefe (2)
23. O'Keeffe (1)
24. O'Laherty (1)
25. O'Leary (9)
26. O'Loughlin (1)
27. O'meara (18)
28. O'mullane (1)
   29. O'Neil (3)
30. O'neill (7)
31. O'reilly (1)
32. O'Rourke (1)
33. O'Shannessy (9)
34. O'Shea (2)
35. O'Sullivan (6)
36. O'toole (1)
37. Oakes (20)
38. Oakley (1)
39. Oates (2)
40. Oc'Donnell/O'Connell (1)
41. Ocock (1)
42. Odam (2)
43. Oder (2)
44. Odgaard (1)
45. Oehm (13)
46. Oehmichen (5)
47. Oertel (2)
48. of Antwerp (1)
49. of Gaunt (1)
50. of Hainault (1)
51. of Langley (1)
52. of Scotland (1)
53. of Waltham (1)
54. of Woodstock (1)
55. Offor (1)
56. Ogden (2)
   57. Ogg (6)
58. Ogier (1)
59. Ogilvie (4)
60. Ogilvy (3)
61. Ogle (1)
62. Ohlmeyer (1)
63. Ohlsen (4)
64. Ohm (1)
65. Ohmucevic (1)
66. Okes (1)
67. Olasdotter (1)
68. Olcorn (5)
69. Old (4)
70. Old/Hold (8)
71. Old/Ould/Hold (4)
72. Oldfield (8)
73. Oldsdotter (1)
74. Olesen (3)
75. Oliff (1)
76. Olifford (1)
77. Olive (2)
78. Oliver (12)
79. Olliver (1)
80. Olmutz (1)
81. Olmutz/Olmütz (1)
82. Olpen (1)
83. Olsdatter (3)
84. Olsen (59)
   85. Olsen or Andersen or Anderson (1)
86. Olson (3)
87. Olsson (13)
88. Olufsen (7)
89. Ommanney (1)
90. One (1)
91. Opfermann (7)
92. Opfermann. (1)
93. Oram (3)
94. Ord (1)
95. Orford (1)
96. Organ (3)
97. Orleans (2)
98. Orme (2)
99. Orme, Son Of Kettell Talboise (1)
100. Ormond (1)
101. Ormsby (1)
102. Ororke (1)
103. Orpen (1)
104. Orr (11)
105. Orred (2)
106. Orrell (7)
107. Orrman (5)
108. Orsini (3)
109. Orwin (3)
110. Osberger (3)
111. Osborne (14)
112. Osbourne (1)
   113. Osman (1)
114. Osmundsen (1)
115. Ospool (1)
116. Ostegren/Moreland (1)
117. Oswald (2)
118. Ott (2)
119. Otter (1)
120. Ottesen (1)
121. Ottesen [Otzen] (1)
122. Otto (9)
123. Otzen (1)
124. Otzen (Ottesen ) (1)
125. Oughtred (1)
126. Ouinn (1)
127. Outzen (1)
128. Overbye (3)
129. Overlack (7)
130. Overlack von Coln (1)
131. Ovre (3)
132. Owen (27)
133. Owens (12)
134. Owens Or Ovens (3)
135. Oxenham (2)
136. Ozdemir (1)

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