Surname List: Begins with O


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

1. O'Brien (3)
2. O'Bryen (1)
3. O'Connell (1)
4. O'Connor (4)
5. O'Day (1)
6. O'Dell (21)
7. O'Gorman (4)
8. O'Hara (3)
9. O'Hara or Wilson (1)
10. O'Harra (1)
11. O'Kelly (1)
12. O'Leary (5)
13. O'Neil (3)
14. O'Neill (1)
15. O'Reilly (2)
16. O'Rourke (1)
17. O'Shea (1)
18. O'Sullivan (2)
19. Oades (7)
20. Oakden (1)
21. Oakes (5)
22. Oakland (2)
23. Oakley (2)
   24. Oates (48)
25. Oats (1)
26. Oberg (1)
27. Oborn (4)
28. Obray (1)
29. Obridge (1)
30. Ockenden (1)
31. Oddy (10)
32. Odell (1)
33. Odlin (1)
34. Odling (1)
35. Oeltjen (4)
36. Ogden (3)
37. Ogden or Whipple (1)
38. Ogle (3)
39. Oglesby (1)
40. Oglethorpe (1)
41. Ohm (1)
42. Ohrt (1)
43. Oiumg (1)
44. Okeden (1)
45. Olchowski (1)
46. Old (2)
   47. Oldfield (4)
48. Oldham (3)
49. Olding (1)
50. Oldknow (3)
51. Oldridge (4)
52. Oldroyd (2)
53. Olga (1)
54. Olive (3)
55. Oliver (33)
56. Ollerenshaw (1)
57. Ollis (1)
58. Ollivant (5)
59. Olmstead (6)
60. Olner (2)
61. Olsen (10)
62. Olson (1)
63. Omant (2)
64. Omealy (1)
65. Oocker (1)
66. Ooten (3)
67. Openshaw (4)
68. Opray (2)
69. Oram (7)
   70. Orange (1)
71. Orbell (1)
72. Orchard (40)
73. Ord (1)
74. Ord or Tillotson (1)
75. Orpin (1)
76. Orr (1)
77. Orrah (1)
78. Orriel (2)
79. Orsak (2)
80. Orullian (1)
81. Orwin (1)
82. Osborn (3)
83. Osborne (10)
84. Osbourne (1)
85. Osburn (1)
86. Osgathorpe (3)
87. Ossitt (2)
88. Oswald (1)
89. Oswin (2)
90. Othen (2)
91. Otley (1)
92. Ott (4)
   93. Otter (5)
94. Otterburn (1)
95. Ottley (2)
96. Otto (2)
97. Ottoline (2)
98. Oughtibridge (3)
99. Outram (1)
100. Overend (7)
101. Overson (3)
102. Overton (6)
103. Overy (1)
104. Oviatte (1)
105. Owen (24)
106. Owens (3)
107. Owsam (1)
108. Owston (1)
109. Owtram (1)
110. Oxendill (1)
111. Oxenford (2)
112. Oxenham (6)
113. Oxley (74)
114. Oxtoby (11)