Surname List: Begins with O


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

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1. O'BOYLE (9)
2. O'BRIAN (6)
3. O'BRIEN (31)
4. O'BRIEN MORGAN (2)
5. O'CATHAN (2)
6. O'CLAIR (5)
7. O'CONNELL (9)
8. O'CONNOR (9)
9. O'DONNELL (9)
10. O'HARA (3)
11. O'KELLEY (4)
12. O'LARY (2)
13. O'LEARY (2)
14. O'MALEY (1)
15. O'MALLEY (2)
16. O'MARA (1)
17. O'MEALY (4)
18. O'NEAL (3)
19. O'NEIL (2)
20. O'NEILL (10)
21. O'REAGAN (1)
22. O'REILLY (2)
23. OAKES (13)
24. OAKLEY (10)
25. OAKMAN (6)
26. OAKS (1)
27. OAKWOOD (1)
28. OATES (12)
29. OATMAN (1)
30. OATS (1)
31. OBER (10)
32. OBER JOHNSON (1)
33. OBERLANDER (8)
34. OBERLIE (1)
35. OBERT (1)
36. ODABASHIAN (1)
37. ODDIHORN (1)
38. ODDINGSELES (5)
   39. ODDINGSELES OR ODDINGESELES (1)
40. ODELL (8)
41. ODETTE (9)
42. ODIORNE (1)
43. ODREN (1)
44. OECHSLIE (1)
45. OESCH (1)
46. OF ACRE OR ENGLAND (1)
47. OF ANGUS (2)
48. OF ANJOU (3)
49. OF ARAGON (3)
50. OF ARTOIS (3)
51. OF BAVARIA (3)
52. OF BEDFORD (2)
53. OF BOHEMIA (1)
54. OF BRABANT (1)
55. OF BRANDENBURG (1)
56. OF BUCHAN (2)
57. OF BURGUNDY (1)
58. OF CASTILE (8)
59. OF CASTILE-LEON (1)
60. OF CHESTER (3)
61. OF CLARENCE (1)
62. OF CLEVES (3)
63. OF CORNWALL OR ALMAIN (1)
64. OF DENMARK (3)
65. OF DOVER OR DE CHILHAM (2)
66. OF ELTHAM (1)
67. OF ENGLAND (3)
68. OF FIFE (5)
69. OF FLANDERS (1)
70. OF FRANCE (10)
71. OF GALLOWAY (3)
72. OF GAUNT WINDSOR (2)
73. OF GENEVA (2)
74. OF GLOUCESTER (3)
75. OF GUELDERS (2)
76. OF GUISE (1)
   77. OF HAINAULT (1)
78. OF HOLAND (1)
79. OF HOLLAND (1)
80. OF HUNTINGDON (7)
81. OF ILE (19)
82. OF KENT (1)
83. OF LANCASTER (28)
84. OF LENNOX (2)
85. OF LIMBURG (1)
86. OF LORN (3)
87. OF MAR (7)
88. OF MONFERRATO (4)
89. OF NAVARRE (4)
90. OF NORFOLK (2)
91. OF POMERANIA (1)
92. OF ROSS (12)
93. OF SAVOY (7)
94. OF SCOTLAND (8)
95. OF SCOTLAND, EARL OF HUNTINGDON (2)
96. OF THE ISLES (1)
97. OF THE TOWER (1)
98. OF WOODSTOCK (1)
99. OF YORK (1)
100. OFFENBAR (1)
101. OFFICER (1)
102. OFFUTT (1)
103. OG (1)
104. OGARD (3)
105. OGDEN (2)
106. OGG (1)
107. OGILVIE (1)
108. OGILVIE OR OGILVY (2)
109. OGILVY (4)
110. OGLE (21)
111. OLCOTT (4)
112. OLDEN (1)
113. OLDHAM (6)
114. OLEMAN (8)
   115. OLESON (1)
116. OLIN (1)
117. OLINGER (2)
118. OLIPHANT (5)
119. OLIVE (1)
120. OLIVER (25)
121. OLIVER OR OLVER (1)
122. OLKONEN (1)
123. OLMSTEAD (6)
124. OLMSTED (3)
125. OLNEY (22)
126. OLSAVER (3)
127. OLSEN (1)
128. OLSON (19)
129. OLUS (1)
130. OMUNDSON (1)
131. ONG (3)
132. ONLY (1)
133. OPENLANDER (7)
134. OPPELT (14)
135. OPPENHEIM (2)
136. ORCOTT (1)
137. ORCUTT (7)
138. ORDIWAY (101)
139. ORDOYNE (6)
140. ORDWAY (1127)
141. ORILLON DIT CHAMPAGNE (1)
142. ORION-CHAMPAGNE (2)
143. ORMES (2)
144. ORMS (1)
145. ORMSBEE (4)
146. ORMSBY (9)
147. ORNE (1)
148. ORNER (1)
149. ORR (94)
150. ORREBY (2)
151. ORRIN (1)
152. ORSENE (1)
   153. ORTELL (3)
154. ORTH (4)
155. ORVIS (1)
156. OSBORN (10)
157. OSBORNE (8)
158. OSCHNER (8)
159. OSGOOD (115)
160. OSGOOD PATTEE (1)
161. OSILLA (1)
162. OSMER (15)
163. OSTERMAN (1)
164. OSTERSON-CLESLE (1)
165. OSTRANDER (2)
166. OSTRUM (2)
167. OSZUST (5)
168. OTELEY (2)
169. OTIS (41)
170. OTTERSON (4)
171. OUELLETTE (3)
172. OUGHTRED (2)
173. OULDAM (1)
174. OULMAN (1)
175. OUTHOUSE (1)
176. OUTLAND (1)
177. OVERBAY (2)
178. OVERLY (3)
179. OVERZEE (1)
180. OVIATT (3)
181. OVITT (1)
182. OWEN (66)
183. OWEN TUDOR (1)
184. OWENS (17)
185. OXENBRIDGE (4)
186. OXFORD (1)