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'BANNON (1)
6. O'BRIAN (1)
7. O'BRIEN (24)
8. O'CALLAGHAN (3)
9. O'CONNELL (7)
10. O'CONNOR (11)
11. O'DELL (3)
12. O'DONNEL (1)
13. O'DONNELL (1)
14. O'GRADY (1)
15. O'HALLORAN (11)
16. O'HARA (1)
17. O'HARRA (1)
18. O'HEARN (1)
19. O'KEEFE (1)
20. O'LAUGHLIN (1)
21. O'LEARY (4)
22. O'LOUGHLIN (1)
23. O'MEARA (3)
24. O'REILLY (50)
25. O'SHEA (9)
26. O'TOOLE (1)
27. OAKES (5)
28. OAKLEY (7)
29. OAKS (1)
30. OATMAN (1)

31. OATNEY (3)
32. OBERER (3)
33. OBERLANDER (1)
34. OBERWITTE (7)
35. OBRINGER (83)
36. OBRYAN (1)
37. ODENWELLER (1)
38. ODOM (1)
39. ODOSKI (1)
40. ODRONIC (1)
41. OEHLER (1)
42. OELLERMAN (1)
43. OEN (34)
44. OERTMAN (1)
45. OESWEIN (3)
46. OFFENBACHER (3)
47. OGDEN (4)
48. OGLE (1)
49. OGLESBEE (6)
50. OGNIBENE (4)
51. OHLER (1)
52. OHLINGER (1)
53. OHMES (1)
54. OHNEWEHR (3)
55. OILER (1)
56. OKONEK (1)
57. OLBERDING (38)
58. OLDHAM (2)
59. OLDIGES (125)
60. OLDING (41)

61. OLENDICK (1)
62. OLER (1)
63. OLIGER (2)
64. OLIGSCHLAEGER (3)
65. OLIVEIRA (1)
66. OLIVER (4)
67. OLMSTEAD (3)
68. OLNEY (3)
69. OLNHAUSEN (1)
70. OLSEN (2)
71. OLSON (3)
72. OLWINE (2)
73. OMAN (2)
74. OMBRELLO (7)
75. OMEARA (8)
76. OMER (1)
77. OMLAR (1)
78. OMLOR (12)
79. ONDERA (1)
80. ONEIL (2)
81. ONEILL (1)
82. ONKST (1)
83. ONTROP (42)
84. OOMENS (1)
85. OOSTVEEN (1)
86. OPPENAUGH (1)
87. OPPENHEIM (3)
88. OPPERMAN (58)
89. ORBAN (8)
90. ORBERSON (1)

91. ORDEAN (1)
92. ORDING (37)
93. ORDWAY (1)
94. ORF (7)
95. ORICK (4)
96. OROSZ (1)
97. ORPEN (1)
98. ORPHAL (1)
99. ORR (4)
100. ORTIZ (3)
101. ORTMAN (19)
102. ORTMANN (1)
103. ORTWERTH (1)
104. ORWIG (1)
105. ORY (2)
106. OSBORN (2)
107. OSBORNE (10)
108. OSBOURNE (1)
109. OSBRAY (2)
110. OSSEGE (2)
111. OSTDIEK (1)
112. OSTEHEIMER (1)
113. OSTENDORF (4)
114. OSTERDAY (1)
115. OSTERFELD (22)
116. OSTERHOLT (63)
117. OSTERLOH (56)
118. OSTING (2)
119. OSTMAN (2)
120. OSTMANN (1)

121. OSWALD (1)
122. OSWALT (6)
123. OTIS (3)
124. OTT (10)
125. OTTE (108)
126. OTTEN (4)
127. OTTENWESS (1)
128. OTTENWESS RIBBERMAN (1)
129. OTTERBACHER (3)
130. OTTING (93)
131. OTTO (1)
132. OURIEFF (1)
133. OURS (1)
134. OUTCALT (4)
135. OVERBECK (2)
136. OVERHOLSER (18)
137. OVERLEY (1)
138. OVERLY (2)
139. OVERMAN (118)
140. OVERMANN (1)
141. OVERMEYER (3)
142. OVERMOHLE (1)
143. OVERTON (1)
144. OWEN (4)
145. OWENS (8)
146. OWINGS (2)
147. OZAR (1)
148. OZBIRN (3)
149. OZBURN (3)