Surname List: Begins with O

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

1. O'Brien (1)
2. O'Connor (1)
3. O'Gorman (4)
4. O'Neil (1)
5. O'Shaughnessy (1)
6. O'Sullivan (1)
7. Oag (24)

8. Oakley (1)
9. OBE (1)
10. Oddie (98)
11. Odgers (1)
12. Ogilvy (1)
13. Ogram (1)
14. Old (2)

15. Olding (1)
16. Oliphant (1)
17. Oliver (21)
18. Ollay (25)
19. Olsen (2)
20. Oman (8)
21. Omand (393)

22. Oram (1)
23. Orledge (1)
24. Orme (1)
25. Osborn (1)
26. Osborne (2)
27. Osburn (28)
28. Oswald (6)

29. Ovans (2)
30. Overfield (1)
31. Owen (1)
32. Owens (1)
33. Oxenham (2)