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 (1)
2. O"CONNOR (1)
3. O"LAUGHLIN (1)
4. O"LEARY (1)
5. O'BRIAN (1)
6. O'BRIEN (24)
7. O'CALLAGHAN (1)
8. O'CONNELL (6)
9. O'CONNOR (4)
10. O'DELL (3)
11. O'DONNELL (1)
12. O'GRADY (1)
13. O'HARRA (1)
14. O'HEARN (1)
15. O'KEEFE (1)
16. O'LAUGHLIN (1)
17. O'LEARY (2)
18. O'LOUGHLIN (1)
19. O'MEARA (3)
20. O'REILLY (25)
21. O'SHEA (9)
22. O'TOOLE (1)
23. OAKES (3)
24. OAKLEY (6)
25. OAKS (1)
26. OATMAN (1)
27. OATNEY (3)
28. OBERER (3)
29. OBERLANDER (1)
30. OBERWITTE (7)

31. OBRINGER (81)
32. OBRYAN (1)
33. OCONNOR (1)
34. ODENWELLER (1)
35. ODOM (1)
36. ODOSKI (1)
37. ODRONIC (1)
38. OEHLER (1)
39. OELLERMAN (1)
40. OEN (33)
41. OERTMAN (1)
42. OESWEIN (3)
43. OFFENBACHER (3)
44. OGDEN (4)
45. OGLE (1)
46. OGLESBEE (6)
47. OGNIBENE (4)
48. OHALLORAN (1)
49. OHLER (1)
50. OHLINGER (1)
51. OHMES (1)
52. OHNEWEHR (3)
53. OILER (1)
54. OKONEK (1)
55. OLBERDING (36)
56. OLDHAM (2)
57. OLDIGES (125)
58. OLDING (41)
59. OLENDICK (1)
60. OLER (1)

61. OLIGER (2)
62. OLIGSCHLAEGER (3)
63. OLIVEIRA (1)
64. OLIVER (4)
65. OLMSTEAD (3)
66. OLNEY (3)
67. OLNHAUSEN (1)
68. OLSEN (2)
69. OLSON (3)
70. OLWINE (2)
71. OMAN (2)
72. OMBRELLO (7)
73. OMEARA (8)
74. OMER (1)
75. OMLAR (1)
76. OMLOR (12)
77. ONDERA (1)
78. ONEIL (2)
79. ONEILL (1)
80. ONKST (1)
81. ONTROP (42)
82. OOMENS (1)
83. OOSTVEEN (1)
84. OPPENAUGH (1)
85. OPPENHEIM (3)
86. OPPERMAN (54)
87. ORBAN (8)
88. ORBERSON (1)
89. ORDEAN (1)
90. ORDING (37)

91. ORDWAY (1)
92. ORF (7)
93. ORICK (4)
94. OROSZ (1)
95. ORPEN (1)
96. ORPHAL (1)
97. ORR (4)
98. ORTIZ (3)
99. ORTMAN (19)
100. ORTMANN (1)
101. ORTWERTH (1)
102. ORWIG (1)
103. ORY (2)
104. OSBORN (1)
105. OSBORNE (4)
106. OSBOURNE (1)
107. OSBRAY (2)
108. OSSEGE (2)
109. OSTDIEK (1)
110. OSTEHEIMER (1)
111. OSTENDORF (1)
112. OSTERDAY (1)
113. OSTERFELD (22)
114. OSTERHOLT (62)
115. OSTERLOH (56)
116. OSTING (2)
117. OSTMAN (2)
118. OSTMANN (1)
119. OSWALD (1)
120. OSWALT (3)

121. OTIS (2)
122. OTT (10)
123. OTTE (90)
124. OTTEN (4)
125. OTTENWESS (1)
126. OTTENWESS RIBBERMAN (1)
127. OTTERBACHER (3)
128. OTTING (92)
129. OTTO (1)
130. OURIEFF (1)
131. OURS (1)
132. OVERBECK (2)
133. OVERHOLSER (18)
134. OVERLEY (1)
135. OVERLY (2)
136. OVERMAN (107)
137. OVERMANN (1)
138. OVERMEYER (3)
139. OVERMOHLE (1)
140. OVERTON (1)
141. OWEN (4)
142. OWENS (6)
143. OWINGS (2)
144. OZAR (1)
145. OZBIRN (3)
146. OZBURN (3)