Surname List: Begins with O


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

1. o 'Beolan (2)
2. o 'Brien (1)
3. o' Bannon (1)
4. o' Bell (9)
5. o' Beolain (1)
6. o' Boyle (1)
7. o' Breen (17)
8. o' Brennan (1)
9. o' Brian (12)
10. o' Brien (241)
11. o' Brien de Thomond (3)
12. o' Brien Mac (1)
13. o' Brien Thompson (1)
14. o' Brien-Ara (1)
15. o' Bryan (5)
16. o' Bryen (4)
17. o' Byrne (5)
18. o' Caerbhaill (1)
19. o' Cahan (5)
20. o' Callaghan (35)
21. o' Carrol (1)
22. o' Carroll (7)
23. o' Cavanagh (2)
24. o' Cearbhall (2)
25. o' Cheinnselaig (14)
26. o' Chennselaig (1)
27. o' Chorb (1)
28. o' Chuind (1)
29. o' Conaing (1)
30. o' Connell (64)
31. o' Conners (1)
32. o' Connor (73)
33. o' Connor-Kerry (1)
34. o' Connough (2)
35. o' Conor (6)
36. o' Conor Sligo (1)
37. o' Crega (1)
38. o' Crowly (2)
39. o' Cuillen (1)
40. o' Daire Rainey (2)
41. o' Dea (4)
42. o' Dell (6)
43. o' Dennel (1)
44. o' Docherty (2)
45. o' Donel (1)
46. o' Donell (1)
47. o' Donnagan (1)
48. o' Donnel (1)
49. o' Donnell (64)
50. o' Donnell von Tyrconell (3)
51. o' Donnell von Tyrconnell (3)
52. o' Donoghue (1)
53. o' Donovan (3)
54. o' Draine (1)
55. o' Duibhne (1)
56. o' Dungalaig (1)
57. o' Duraghy (1)
58. o' Eagra (1)
59. o' Eidin (1)
60. o' Fallon (2)
61. o' Faolain (2)
62. o' Farrell (2)
63. o' Felan (1)
64. o' Ferral (1)
65. o' Ferrall-Boy (2)
66. o' Flaherty (4)
67. o' Fogarty (1)
68. o' Fogurty (1)
69. o' Garvey (2)
70. o' Gorman (4)
71. o' Grady (44)
72. o' Hagan (9)
73. o' Halloran (1)
74. o' Hara (32)
75. o' Hare (3)
76. o' Hartigan (1)
77. o' Hea (1)
78. o' Hegerty (4)
79. o' Hurley (2)
80. o' Kane (2)
81. o' Keefe (6)
82. o' Keeff (1)
83. o' Keeffe (4)
84. o' Keeley (3)
85. o' Kelley (1)
86. o' Kelly (6)
87. o' Kennedy (8)
88. o' Key (1)
89. o' Killey (1)
90. o' Knightley (2)
91. o' Lalor (1)
92. o' Lavery (2)
93. o' Leary (9)
94. o' Lorcain (1)
95. o' Loughnan (1)
96. o' Madden (2)
97. o' Mahon (1)
98. o' Mahony (1)
99. o' Maille Owen (1)
100. o' Maillend (3)
101. o' Malia (1)
102. o' Malley (3)
103. o' Mara (10)
104. o' Meagber (1)
105. o' Mealy (1)
106. o' Melaghlin (5)
107. o' Moore (14)
108. o' Morda (1)
109. o' More (5)
110. o' Mullane (1)
111. o' Mulloy (1)
112. o' Mulyran (1)
113. o' Murphy (1)
114. o' Neal (14)
115. o' Neale (5)
116. o' Neall (11)
117. o' Neil (11)
118. o' Neill (123)
119. o' Neill de Tyrone (1)
120. o' Nolan (1)
121. o' Phelan (1)
122. o' Pluingceid (1)
123. o' Quin (1)
124. o' Rear (1)
125. o' Regan (1)
126. o' Reilly (6)
127. o' Rorke (5)
128. o' Rourk (2)
129. o' Rourke (1)
130. o' Ruarc (5)
131. o' Ryn (1)
132. o' Shaughnessy (7)
133. o' Shea (1)
134. o' Sullivan (30)
135. o' Sullivan Beare (3)
136. o' Tard la Grange-Keith (1)
137. o' Toole (17)
138. O'Blennis (1)
139. Oachs (4)
140. Oadham (2)
141. Oak (1)
142. Oakden (2)
143. Oakes (36)
144. Oakey (5)
145. Oakleaf (1)
146. Oakley (16)
147. Oaks (6)
148. Oates (8)
149. Obachah (1)
150. Obama (12)
151. Obanion (1)
152. Obbard (1)
153. Obbema (1)
154. Obbens (1)
155. Obdam (1)
156. Obedience (1)
157. Obediente (1)
158. Obelink (1)
159. Obelitz (1)
160. Obell (1)
161. Oben (2)
162. Obenberg (1)
163. Obeniche (1)
164. Ober (7)
165. Oberacker zu Sieghartsstein (1)
166. Oberembt (2)
167. Oberheim (3)
168. Oberhlotzer (1)
169. Oberholster (18)
170. Oberholzer (6)
171. Oberje (2)
172. Oberländer (4)
173. Oberle (1)
174. Oberleuter von Lassing (1)
175. Oberlin (2)
176. Obermair (2)
177. Obermayer (2)
178. Obermeyer (1)
179. Obernaür (1)
180. Oberstadt (1)
181. Obertacke (1)
182. Oberti (2)
183. Obijn (1)
184. Obolenska (1)
185. Obolenskaia (1)
186. Obolenskaja (2)
187. Obolensky (23)
188. Obolensky-Neledinsky-Meletzky (5)
189. Oboussier (1)
190. Obreen (12)
191. Obrenović (7)
192. Obrenovic (7)
193. Obreskowa (1)
194. Obrist (1)
195. Obukova (1)
196. Ocampo (1)
197. Occo (2)
198. Ocem de Almeida (1)
199. Och (2)
200. Ocheltree (1)
201. Ochoa de Ondategui (2)
202. Ochs von Gunzendorf (2)
203. Ochs von Sonnau & Reichersperg (2)
204. Ochsin von Gunzendorf (1)
205. Ochterlony (3)
206. Ocieska (1)
207. Ockel (2)
208. Ockens (4)
209. Ockers (14)
210. Ockers Cau (2)
211. Ockerse (7)
212. Ockersse (27)
213. Ockerz. (1)
214. Ockes (2)
215. Ockhorst (4)
216. Ockhuysen (1)
217. Ockinga (5)
218. Ockstee (1)
219. Ocskay de Ocsko (1)
220. Octavius (1)
221. Octon (1)
222. Odard (2)
223. Odart (5)
224. Odart de Rilly d'Oysonville (1)
225. Odberre (1)
226. Odde (1)
227. Oddie (6)
228. Odding (2)
229. Oddyle (2)
230. Odé (1)
231. Odekerken (1)
232. Odell (18)
233. Odendaal (21)
234. Odendahl (1)
235. Odenhoven (1)
236. Odenthal (2)
237. Oder (3)
238. Odescalchi (29)
239. Odescalchi di Novara (1)
240. Odet (1)
241. Odette (1)
242. Odey (1)
243. Odgers (1)
244. Odier (2)
245. Odijk (2)
246. Odilia (1)
247. Odinck (1)
248. Odingsells (5)
249. Odink (1)
250. Odino (1)
251. Odinot (2)
252. Odinsson (1)
253. Odiorne (1)
254. Odland (4)
255. Odling (1)
256. Odlum (2)
257. Odoe (1)
258. Odoevskaya (2)
259. Odoevsky (1)
260. Odom (4)
261. Odone (4)
262. Odor (1)
263. Odou (1)
264. Odoyevskaya (1)
265. Odrowazowna (1)
266. Odson (1)
267. Odum (1)
268. Odygd (3)
269. Oebeles (2)
270. Oechslin (1)
271. Oedses (1)
272. Oedtsma (3)
273. Oedtsma van Juckema (3)
274. Oeheim (2)
275. Oehler (1)
276. Oehlmann (1)
277. Oehmichen (6)
278. Oehninger (1)
279. Oeijen (1)
280. Oelbermann (1)
281. Oele (1)
282. Oeler (5)
283. Oelhafen (1)
284. Oelkers (1)
285. Oeloffse (1)
286. Oelofse (17)
287. Oelrich (2)
288. Oelrichs (5)
289. Oelwein (1)
290. Oem (78)
291. Oem van Arkel (1)
292. Oem van Bochoven (6)
293. Oem van Bockhoven (1)
294. Oem van Bokhoven (5)
295. Oem van Papendrecht (1)
296. Oem van Wijngaarden (34)
297. Oem van Wijngaerden (7)
298. Oem van Wyngaerden (1)
299. Oem van Zevender (2)
300. Oemcens (1)
301. Oemen (1)
302. Oenema (4)
303. Oenes (2)
304. Oentses (1)
305. Oepkes (2)
306. Oerinck (1)
307. Oerlemans (3)
308. Oertgen (2)
309. Oerthling (1)
310. Oertwein (2)
311. Oertwin (1)
312. Oesau (32)
313. Oese von Walhausen (1)
314. Oesebrand (1)
315. Oeser (2)
316. Oessendorff (1)
   317. Oest (8)
318. Oesterberg (1)
319. Oesterlen (1)
320. Oesterling (1)
321. Oestermann (3)
322. Oesters (1)
323. Oesterschmidt (1)
324. Oestherhaut (1)
325. Oeteren (1)
326. Oeters van Maris (1)
327. Oetgens (10)
328. Oetgens van Waveren (10)
329. Oetgens van Waveren Pancras Clifford (16)
330. Oetgins (2)
331. Oetinger (2)
332. Oetker (10)
333. Oetting (1)
334. Oettingen (3)
335. Oettingen Ettinger-Halevi (1)
336. Oettle (1)
337. Oevermans (1)
338. Oexle von Friedenberg (1)
339. of Aberbothenoth (6)
340. of Acre (1)
341. of Acton (2)
342. of Afrikiya (1)
343. of Agade (2)
344. of Ailech (1)
345. of Albha (1)
346. of Alcester (1)
347. of Aleppo (1)
348. of Allardice (1)
349. of Aller (4)
350. of Allerdale (1)
351. of Anathoth (1)
352. of Androssan (1)
353. of Angeln (3)
354. of Angoulême (1)
355. of Angus (16)
356. of Antioch (1)
357. of Anu (1)
358. of Argyll (3)
359. of Argyllshire (12)
360. of Arimathaea (1)
361. of Armorica (2)
362. of Arrapachtis (1)
363. of Ashley (1)
364. of Aspinall (4)
365. of Athol (5)
366. of Atholl (6)
367. of Babylon (5)
368. of Balcarrie (1)
369. of Ballagh (1)
370. of Bamborough (4)
371. of Bantry (1)
372. of Barenshill (2)
373. of Bastenburg (1)
374. of Bedford (2)
375. of Beersheba (1)
376. of Bermingham (1)
377. of Bernica (16)
378. of Bernicia (4)
379. of Berry Pomeroy (1)
380. of Berwick (1)
381. of Blantyre (1)
382. of Bodnithoedd (1)
383. of Bodvel (1)
384. of Boni (1)
385. of Borthwick (2)
386. of Boscath (1)
387. of Braytoft (1)
388. of Bretargh (1)
389. of Briquebec (1)
390. of Bristol (1)
391. of Britons (1)
392. of Brittany (1)
393. of Brotherton (1)
394. of Buchan (2)
395. of Bulgaria (1)
396. of Burlington (1)
397. of Caithness (7)
398. of Callendar (3)
399. of Cambridge (11)
400. of Cardigan (1)
401. of Carew (1)
402. of Carlisle (1)
403. of Carrick (7)
404. of Cathcart (1)
405. of Chattan (10)
406. of Cheddar (1)
407. of Chester (2)
408. of Chesterfield (1)
409. of Cimmerians (11)
410. of Cinneal Eoguin (1)
411. of Clarence (4)
412. of Colchester (1)
413. of Connacht (1)
414. of Connaught (4)
415. of Corbi (1)
416. of Cordova (1)
417. of Cornwall (28)
418. of Cranntock (1)
419. of Cumbria (2)
420. of Dalradia (6)
421. of Deheubarth (1)
422. of Deira (2)
423. of Denia & Balearic (1)
424. of Denmark (2)
425. of Desmond (1)
426. of Devon (3)
427. of Dimitia (1)
428. of Docwra (1)
429. of Dol (5)
430. of Douni (2)
431. of Draffen (1)
432. of Dublin (9)
433. of Dule (1)
434. of Dull (1)
435. of Dunbar (28)
436. of Durham (3)
437. of Dyfed (4)
438. of East Anglia (11)
439. of Eccles (2)
440. of Egypt (11)
441. of England (80)
442. of Essex (4)
443. of Etchells (1)
444. of Ethod (1)
445. of Färlä (1)
446. of Fasselane (1)
447. of Fife (5)
448. of Finland (1)
449. of Flint (1)
450. of Folkestone (1)
451. of Foremark (1)
452. of Frankton (1)
453. of Frombourg (1)
454. of Galacia (1)
455. of Galbraith (2)
456. of Galicia (3)
457. of Gall (1)
458. of Galloway (3)
459. of Gask (1)
460. of Gelli Iorwerth (1)
461. of Gibeah (2)
462. of Gilsland (3)
463. of Gloucester (13)
464. of Glynliffon (1)
465. of Graianog (1)
466. of Granada (1)
467. of Greece (1)
468. of Greenwille (2)
469. of Greystoke (1)
470. of Grindreth (1)
471. of Gwent (1)
472. of Gwynvey (1)
473. of Hadeland (2)
474. of Harrington (1)
475. of Haselden (5)
476. of Hastings (1)
477. of Hatfield (1)
478. of Hedemarken (1)
479. of Helgot (1)
480. of Hendwr (1)
481. of Hiaz (1)
482. of High Ireby (1)
483. of Hijaz (2)
484. of Holland (10)
485. of Hopton (1)
486. of Hordaland (1)
487. of Huntingdon (10)
488. of Huntington (5)
489. of Iraq (3)
490. of Ireby (1)
491. of Ireland (14)
492. of Isbell (2)
493. of Islay (1)
494. of Israel (1)
495. of Italy (2)
496. of Jerusalem (3)
497. of Jordan (1)
498. of Jotbah (1)
499. of Judah (18)
500. of Jutland (3)
501. of Kendal (1)
502. of Kent (30)
503. of Khazaria (2)
504. of Kherait (3)
505. of Kildare (1)
506. of Killeen (2)
507. of Kinalmeaky (1)
508. of Kingsley (6)
509. of Kinloch (1)
510. of Kish (10)
511. of Lagash (1)
512. of Lancaster (8)
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514. of Lennox (24)
515. of Lethington (1)
516. of Levanach (2)
517. of Levanax (1)
518. of Levenach (1)
519. of Libnah (1)
520. of Lincoln (3)
521. of Loarn (1)
522. of Lochaber (8)
523. of Lochore (1)
524. of Lorn (6)
525. of Lot (2)
526. of Lumley (7)
527. of Lundy (1)
528. of Luss (2)
529. of Lyon Logie (1)
530. of Macduffie (1)
531. of Macedonia (1)
532. of Man (5)
533. of Man & Dublin & the Isles (1)
534. of Mar (6)
535. of Marr (1)
536. of Mawddy (1)
537. of Meirionydd (2)
538. of Menteith (2)
539. of Menteth (2)
540. of Mercia (71)
541. of Mexico (2)
542. of Middleton (1)
543. of Misterton (1)
544. of Moab (2)
545. of Montal (1)
546. of Montenegro (1)
547. of Montifex (1)
548. of Montivilliers (1)
549. of Monymusk (1)
550. of Moray (5)
551. of More (2)
552. of Mostyn (2)
553. of Moynet (2)
554. of Munster (2)
555. of Murdistown (1)
556. of Namur (1)
557. of Nanhoron Issa (1)
558. of Nanhoron ucha (1)
559. of Newton (2)
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561. of Northampton (1)
562. of Northhampton (1)
563. of Northumberland (7)
564. of Northumbria (20)
565. of Norway (1)
566. of Nottingham (2)
567. of Novgorod (1)
568. of Odingsells (1)
569. of Orbe, Switzerland (1)
570. of Orkney (21)
571. of Orkney & Caithness (1)
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573. of Osborn (1)
574. of Osraige (1)
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576. of Ossory (3)
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578. of Portugal (3)
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580. of Powys (2)
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587. of Rigsby (2)
588. of Ross (10)
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591. of Ruthven (1)
592. of Rutland (1)
593. of Salisbury (3)
594. of Saltmarsh (1)
595. of Sanford (3)
596. of Scotland (73)
597. of Scots (1)
598. of Scottish Dalradia (1)
599. of Scythia (1)
600. of Shinar (1)
601. of Shottle (1)
602. of Shropshire (2)
603. of Sibton (1)
604. of Sicambri (15)
605. of Siluria (2)
606. of Skipwith (1)
607. of Slesvik (1)
608. of Solarys (1)
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617. of Strathclyde (14)
618. of Strathearn (23)
619. of Strathnaver (2)
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626. of the Angles (3)
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628. of the Balearic Isles (1)
629. of the Baltic Goths (1)
630. of the Chaldees (1)
631. of the Gainas (1)
632. of the Goths (1)
   633. of the Iceni (1)
634. of the Isle of Wight (1)
635. of the Isles (5)
636. of the Jin (1)
637. of the Kumans (2)
638. of the Mountains (2)
639. of the Obotrites (3)
640. of the Ostrogoths (5)
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642. of the Picts (17)
643. of the Rubani Hani (1)
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660. of Ur & Agade (3)
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677. of Yair (2)
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689. Offerman (104)
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691. Offers (2)
692. Offieri (3)
693. Offin (3)
694. Offing (3)
695. Offingahuisen (2)
696. Offley (53)
697. Offlow (1)
698. Offutt (1)
699. Ofhuis (1)
700. Ofzen (1)
701. Ogan (2)
702. Ogburn (2)
703. Ogden (142)
704. Oger de Celles (1)
705. Ogg (3)
706. Ogier (8)
707. Ogiers (2)
708. Ogilbie (1)
709. Ogilby (1)
710. Ogilvie (15)
711. Ogilvie-Grant (8)
712. Ogilvy (281)
713. Ogilvy-Grant (12)
714. Ogilwie (1)
715. Oginska-Kozelska (1)
716. Oginski (1)
717. Oginski-Kozelski (2)
718. Oginskis (1)
719. Oginsky (1)
720. Ogiston (3)
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722. Ogle (70)
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724. Oglethorpe (2)
725. Oglivie (1)
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727. Ogmundsson (3)
728. Ognal (2)
729. Ogor (1)
730. Ogre (2)
731. Ögren (3)
732. Ogston (5)
733. Ogstoun (3)
734. Ogwan (2)
735. Ogwel (1)
736. Ogylvie (1)
737. Oheb (2)
738. Oheb Abucosi (1)
739. Oheb Brandon (2)
740. Oheim (2)
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742. Ohlendorf (2)
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744. Ohligschleger (1)
745. Öhlschlager (1)
746. Ohlson (1)
747. Ohlsson (1)
748. Ohm (2)
749. Ohm von Januschowsky (1)
750. Ohman (2)
751. Ohmann (1)
752. Ohmart (3)
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1488. Overduijn (1)
1489. Overduin (1)
1490. Overduyn (2)
1491. Overgaauw (3)
1492. Overgauw (3)
1493. Overhagen (2)
1494. Overhoff (1)
1495. Overhues (14)
1496. Overkamp (4)
1497. Overlacker (1)
1498. Overlander (8)
1499. Overman (8)
1500. Overmars (8)
1501. Overmeer (5)
1502. Overnes (4)
1503. Overpeld (2)
1504. Overrijn van Schoterbosch (3)
1505. Overschie (4)
1506. Oversmith (1)
1507. Overstolz (17)
1508. Overstolz vom Ufer (2)
1509. Overstolz von Efferen (2)
1510. Overstreet (4)
1511. Overtheil (2)
1512. Overton (41)
1513. Overtoom (2)
1514. Overvest (1)
1515. Overwater (11)
1516. Overweg (1)
1517. Overwijn (1)
1518. Overzee (2)
1519. Overzier (1)
1520. Ovesen (1)
1521. Oviatt (3)
1522. Oving (11)
1523. Ovinge (1)
1524. Ovingh (1)
1525. Ovink (2)
1526. Ovtchinnikova (1)
1527. Owen (320)
1528. Owen ap Hugh (1)
1529. Owen-Smith (3)
1530. Owen-Taylor (2)
1531. Owenby (1)
1532. Owens (46)
1533. Owensby (1)
1534. Owers (2)
1535. Owings (71)
1536. Ownsby (1)
1537. Owsley (28)
1538. Owslie (1)
1539. Owtram (2)
1540. Owtred (1)
1541. Oxborrow (1)
1542. Oxe (11)
1543. Oxehoved (3)
1544. Oxehufvud (8)
1545. Oxenberg (4)
1546. Oxenbridge (63)
1547. Oxenden (12)
1548. Oxenham (3)
1549. Oxenhope (1)
1550. Oxenstierna (42)
1551. Oxenstierna af Korsholm (3)
1552. Oxenstierna af Nynas (1)
1553. Oxford (3)
1554. Oxholm (7)
1555. Oxhuvud (1)
1556. Oxley (6)
1557. Oxspring (2)
1558. Oxwick (1)
1559. Oyama (3)
1560. Oye (1)
1561. Oyen (2)
1562. Oyens (9)
1563. Oyken (1)
1564. Oyle (2)
1565. Oyler (1)
1566. Oyley (1)
1567. Oyli (1)
1568. Oyster (1)
1569. Ozannat (1)
1570. Ozarowska (1)
1571. Ozborne (1)
1572. Ozga (2)
1573. Ozilou (1)
1574. Ozinga (2)
1575. Ozorio Portocarrero (3)
1576. Ozursdottir (1)
1577. o\' Donnell (1)
1578. o’ Dea d’ Audibert de Lussan (1)
1579. o’ Malley (1)

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