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Surname List: Begins with O


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

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1. O (1)
2. O Connell (3)
3. O Dell (2)
4. O Underhill (1)
5. O"CONNOR (1)
6. O"Donnell (1)
7. O'Bannon (4)
8. O'Beirne (4)
9. O'Boyle (1)
10. O'Bree (13)
11. O'Briant (1)
12. O'Brien (166)
13. O'Brien (OBrian) (1)
14. O'Brien-Ara (1)
15. O'Bryan (3)
16. O'Callaghan (26)
17. O'CALLAHAN (1)
18. O'Canaan (1)
19. O'Carroll (6)
20. O'Cathan (2)
21. O'Cock (1)
22. O'Connell (19)
23. O'conner (6)
24. O'Connor (16)
25. O'Corra Curry (1)
26. O'Crowley (2)
27. O'cull (1)
28. O'Day (1)
29. O'Dea (3)
30. O'Dell (5)
31. O'Donall (1)
32. O'Donel (1)
33. O'Donnal (1)
34. O'Donnell (14)
35. O'Dougherty (1)
36. O'Driscoll (6)
37. O'Dwyer (3)
38. O'Farrell (1)
39. O'Ferrall (1)
40. O'Gorman (3)
41. O'Grady (6)
42. O'Hagan (1)
43. O'Halloran (7)
44. O'Haloran (1)
45. O'Hanlon (2)
46. O'Hara (12)
47. O'Hare (2)
48. O'Hurley (2)
49. O'Kane (2)
50. O'Kearney (3)
51. O'KEEFE (5)
52. O'Keeffe (1)
53. O'Kelly (1)
54. O'LEARY (47)
55. O'Mahon (2)
56. O'Mahoney (3)
57. O'MALLEY (21)
58. O'Mara (1)
59. O'Meagher (1)
60. O'Mealy (later O'Malley) (2)
61. O'nbeal (1)
62. O'neal (4)
63. O'Neale (3)
64. O'Neil (18)
65. O'Neild (1)
66. O'Neile (1)
67. O'Neill (36)
68. O'Rahilly (4)
69. O'Rear (1)
70. O'Reilly (19)
71. O'Rorke (4)
72. O'Rourke (2)
73. O'Ryan (1)
74. O'SHANNESSEY (1)
75. O'Shaugnessy (1)
76. O'Shea (3)
77. O'Shera (1)
78. O'SULLIVAN (4)
79. O'Toole (3)
80. Oades (119)
81. Oakden (4)
82. Oake (1)
83. OáKeefe (1)
84. Oakenfull (1)
85. Oakes (65)
86. Oakey (10)
87. Oakland (11)
88. Oakley (37)
89. Oaks (16)
90. Oaksford (1)
91. Oar (7)
92. Oars (1)
93. Oastler (1)
94. OáSullivan (1)
95. OATAWAY (1)
96. Oaten (1)
97. Oates (1696)
98. Oates (Oddy) (1)
99. Oates (Otes) (4)
100. Oates (Otte) (2)
101. Oates Longden (1)
102. Oats (538)
103. Oatway (1)
104. Obbard (42)
105. Obee (1)
106. Obenchain (6)
107. Ober (1)
108. Oberhofer (3)
109. Oberon (1)
110. Obleia (1)
111. Oblein (7)
112. Oborn (1)
113. Oborne (1)
114. Obrey (1)
115. Obrien (1)
116. Ochoa (1)
117. Ochterlony (1)
118. Ockerby (1)
119. Ockham (1)
120. Ockley (3)
121. Ockwell (2)
122. Oconostota (2)
123. Octavius (1)
124. Odams (1)
125. Oddy (10)
126. ODEL (1)
127. Odell (126)
128. Odey (4)
129. ODGEN (1)
130. Odger (2)
131. Odgers (13)
132. Odlin (2)
133. Odling (12)
134. ODLUM (5)
135. Odom (2)
136. OEHKLE (1)
137. Oehley (1)
138. Oelrichs (1)
139. Oertel (10)
140. of (13)
141. of Achalas (1)
142. of Alania (1)
143. of Albon (4)
144. of Aldithley (3)
145. of Aldithley (Audley) (1)
146. of Alemanni? (1)
147. of Alencon (1)
148. of Almaine (1)
149. of Alsace (2)
150. of Altdorf (1)
151. of Amnia (1)
152. of Andechs (1)
153. of Andechs-Merania (1)
154. of Anhalt-Köthen (1)
155. of Anjou (16)
156. of Antigny (1)
157. of Antioch (1)
158. of Antwerp (2)
159. of Aquitaine (8)
160. of Aquitaine, of Poitiers (1)
161. of Aquitaine, of Poitou (1)
162. of Aragón (14)
163. of Aragón, of Barcelona (1)
164. of Argyll (3)
165. of Arimathea (1)
166. of Arles (2)
167. of Armagnac (1)
168. of Armenia (2)
169. of Artois (11)
170. of Ascania (61)
171. of Athens (1)
172. of Austrasia (2)
173. of Austria (15)
174. of Austria-Este (1)
175. of Austria-Tuscany (1)
176. of Auvergne (1)
177. of Avesnes (of Hainaut) (1)
178. of Babenberg (4)
179. of Baden (3)
180. of Baden-Durlach (1)
181. of Bage (1)
182. of Bar (4)
183. of Bar-sur-Seine (1)
184. of Barby-Mühlingen (1)
185. of Barcelona (1)
186. of Barcelona Borrel (1)
187. of Barnstaple (1)
188. of Battenberg (6)
189. of Baudmon (1)
190. of Bavaria (19)
191. of Bavaria-Landshut (1)
192. of Bavaria-Munich (1)
193. of Beaujeu (Beaujolais) (1)
194. of Bentheim-Steinfurt (1)
195. of Berain (1)
196. of Berg(u) (1)
197. of Bergamo (1)
198. of Berlepsch (1)
199. of Bernadotte (1)
200. of Bernicia (4)
201. of Beverly (1)
202. of Bigorre (1)
203. of Bisey (1)
204. of Blois (13)
205. of Bohemia (32)
206. of Bohemia and Hungary (1)
207. of Borovsk (1)
208. of Bosnia (1)
   209. of Boulogne (2)
210. of Bourbon (11)
211. of Bourbon-La Marche (1)
212. of Bourbon-Palma (1)
213. of Bourbon-Parma (4)
214. of Bourbon-Two Sicilies (3)
215. of Bourbon-Two-Sicilies (1)
216. of Brabant (7)
217. of Braganza (1)
218. of Brancewell (1)
219. of Brandenburg (11)
220. of Brandenburg-Ansbach (2)
221. of Brandenburg-Bayreuth (2)
222. of Brandenburg-Kulmbach (2)
223. of Brandenburg-Schwedt (1)
224. of Brechin (2)
225. of Bretagne (1)
226. of Breton (1)
227. of Brieg (1)
228. of Brienne (4)
229. of Brittany (10)
230. of Broomshull (1)
231. of Brunswick (2)
232. of Brunswick and Lunenburg (1)
233. of Brunswick-Dannenberg (1)
234. of Brunswick-Grubenhagen-Einbeck (1)
235. of Brunswick-Lüneburg (13)
236. of Brunswick-Lüneburg, of Celle (1)
237. of Brunswick-Wolfenbuttel (6)
238. of Brunswick-Wolfenbüttel (7)
239. of Brunswick-Wolfenbüttel-Bevern (1)
240. of Bulgaria (1)
241. of Buonalbergo (1)
242. of Burgundy (43)
243. of Burgundy-Ivrea (1)
244. of Bytom (1)
245. of Byzantium (2)
246. of Cainhoe (7)
247. of Cambridge (3)
248. of Canossa (1)
249. of Carinthia (5)
250. of Carinthia-Tyrol (1)
251. of Carisbrook (1)
252. of Castile (7)
253. of Castile And Leon (2)
254. of Chalon (7)
255. of Champagne (1)
256. of Châtenois (1)
257. of Châtillon (3)
258. of Chester (1)
259. of Chiemsee (1)
260. of Cilli (1)
261. of Clarence (2)
262. of Clarence, Countess of Ulster de Burgh (1)
263. of Clarence, Prince of England Plantagenet (1)
264. of Clement (1)
265. of Clermont (1)
266. of Cleves (9)
267. of Clifton (4)
268. of Clinton (1)
269. of Cognac (1)
270. of Comburg (Komburg) (1)
271. of Conisburgh (1)
272. of Constantinople (2)
273. of Cornwall (2)
274. of Coucy (1)
275. of Courland (1)
276. of Courtenay (5)
277. of Cyllin (1)
278. of Dagsbourg (1)
279. of Dagsburg (1)
280. of Damascus (2)
281. of Dampierre (4)
282. of Danneskjold-Samsøe. (1)
283. of Denmark (17)
284. of Denmark and Norway (1)
285. of Devon (1)
286. of Dimitrov (1)
287. of Dmitrov (1)
288. of Douglas (1)
289. of Drakelow de Swynnerton (1)
290. of Dreux (2)
291. of Dublin (1)
292. of Dudley Sutton Tibetot Tiptoft (1)
293. of Dunbar (1)
294. of Dunegal (1)
295. of Durazzo (2)
296. of Durham (1)
297. of East Anglia (1)
298. of East Frisia (1)
299. of Ebersdorf (1)
300. of Edessa (1)
301. of Egypt (1)
302. of Elchingen-Ravenstein (1)
303. of England (23)
304. of England Plantagenet (2)
305. of Erbach (2)
306. of Erbach-Schönberg (1)
307. of Essex (1)
308. of Estridsen (9)
309. of Faremoutiers (1)
310. of Flanders (13)
311. of Formbach (1)
312. of Fortià (1)
313. of France (14)
314. Of France and Navarre Capet (1)
315. of Franconia (1)
316. of Friston (1)
317. of Friuli (3)
318. of Galitsch (1)
319. of Galitzky (1)
320. of Galloway (2)
321. of Gaunt (Ghent) (1)
322. of Gaunt Duke of Lancaster Plantagenet Beaufort KG (1)
323. of Geneva (3)
324. of Germany (4)
325. of Gilsland (2)
326. of Glinski (2)
327. of Glogau (1)
328. of Gloucester (1)
329. of Gorizia-Tyrol (1)
330. of Gorze (1)
331. of Grapfeld (1)
332. of Great Britain (1)
333. of Greece (1)
334. of Greece and Denmark, House of Oldenburg (1)
335. of Groitzsch (1)
336. of Grosmont (2)
337. of Guelders (Gueldres) (1)
338. of Guelph (1)
339. of Guînes (1)
340. of Guise (1)
341. of Gwent (1)
342. of Görlitz (1)
343. of Görz (Gorizia) (1)
344. of Habsburg (40)
345. of Hainault d'Avesnes (1)
346. of Hainault De Valois (1)
347. of Hainaut (9)
348. of Hanau (1)
349. of Hanau-Lichtenberg and Müntzenberg (1)
350. of Hanover (6)
351. of Harcourt (2)
352. of Harde Knud (1)
353. of Hatton (1)
354. of Hauteville (15)
355. of Heinsberg (1)
356. of Henneberg (2)
357. of Hereford (2)
358. of Hesbaye (1)
359. of Hesse (23)
360. of Hesse-Darmstadt (3)
361. of Hesse-Kassel (2)
362. of Hesse-Philippsthal (1)
363. of Hinderink (1)
364. of Hohenberg (1)
365. of Hohenburg (Hohenzollern) (1)
366. of Hohenheim (1)
367. of Hohenlohe-Langenburg (5)
368. of Hohenstaufen (9)
369. of Hohenstein (1)
370. of Hohenthal (2)
371. of Hohenzollern (15)
372. of Holland (4)
373. of Holland and Hainault Prince of Orange D' Avesnes (1)
374. of Holstein (1)
375. of Holstein-Itzehoe (1)
376. of Hungary (5)
377. of Ibelin (4)
378. of Ingersleben (1)
379. of Ireland (5)
380. of Isenburg-Limburg (1)
381. of Ivrea (3)
382. of Jaroslavl (1)
383. of Jerusalem (6)
384. of Jever (1)
385. of Joinville (1)
386. of Juliers (1)
387. of Jülich (1)
388. of Jülich-Berg (1)
389. of Kemeys (1)
390. of Kent (1)
391. of Khazaria (1)
392. of Khazaria (Tzitzak) (1)
393. of Kiev (1)
394. of Krosigk (1)
395. of Kuijc and Malsen (1)
396. of Laigle (1)
397. of Lancaster (3)
398. of Landen (2)
399. of Landsberg (1)
400. of Langley (1)
401. of Laon (1)
402. of Lechaber (1)
403. of Leiningen (2)
404. of Leiningen-Dagsburg (1)
405. of Leiningen-Dagsburg-Falkenburg (1)
406. of Lennox (1)
407. of León (1)
408. of Leszczyński (1)
409. of Leuchars (1)
410. of Leuchtenberg (1)
411. of Leuven (3)
412. of Lichtenberg (1)
413. of Liechtenstein (3)
414. of Limburg (1)
415. of Limoges (1)
416. of Lincoln (1)
   417. of Lindow-Ruppin (1)
418. of Lippe (1)
419. of Lippe-Biesterfeld (1)
420. of Lith (1)
421. of Lithuania (6)
422. of Londesbrough (2)
423. of Loon (de Looz) (1)
424. of Loon-Heinsberg (1)
425. of Lorche (1)
426. of Lorn (1)
427. of Lorne (1)
428. of Lorraine (18)
429. of Lotharingia (1)
430. of Louvain (3)
431. of Lower Burgundy (1)
432. of Lower Lorraine (2)
433. of Lusignan (4)
434. of Luxembourg (5)
435. of Luxembourg (of Bohemia) (1)
436. of Löwenstein-Wertheim-Rosenberg (5)
437. of Macon (1)
438. of Mâcon and Vienne (1)
439. of Maine (1)
440. of Malojaroslavsky (1)
441. of Mansfeld-Arnstein (1)
442. of Mar (2)
443. of Marash (1)
444. of Martin (4)
445. of Masovia (1)
446. of Maurienne, House of Savoy (1)
447. of Mayenne (1)
448. of Mecklenburg (2)
449. of Mecklenburg-Güstrow (2)
450. of Mecklenburg-Schwerin (9)
451. of Mecklenburg-Strelitz (5)
452. of Meissen (Meißen) (2)
453. of Melitene (1)
454. of Merania (1)
455. of Mercia (8)
456. of Mergentheim (1)
457. of Metz (7)
458. of Moab (1)
459. of Mojaisk (2)
460. of Montbéliard (4)
461. of Montenegro (1)
462. of Montfaucon (1)
463. of Montferrat (6)
464. of Montlhéry (1)
465. OF MORE AND ROMSDAL (1)
466. of Morggán (1)
467. of Moscow (45)
468. of Moselle (1)
469. of Nahash (1)
470. of Namur (5)
471. of Naples and Sicily (3)
472. of Naples Capet d'Anjou-Sicily (1)
473. of Nassau (6)
474. of Nassau-Dietz (1)
475. of Nassau-Ouwerkerk (1)
476. of Nassau-Usingen (1)
477. of Nassau-Weilburg (3)
478. of Navarre (12)
479. of Nazareth (1)
480. of Neufchâtel (1)
481. of Neuffen (1)
482. of Nevers (2)
483. of Nonant (Novaunt) (1)
484. of Nordgau (1)
485. of Normandy (14)
486. of Northampton (1)
487. of Northeim (2)
488. of Northumbria (14)
489. of Norway (1)
490. of Norwich (2)
491. of Novgorod (2)
492. of Nuremberg (1)
493. of Nürnberg (1)
494. of Oettingen (1)
495. of Oldenburg (10)
496. of Opole (1)
497. of Orange (3)
498. of Orange-Nassau (9)
499. of Orcades (1)
500. of Orleans (3)
501. of Paris (4)
502. of Paris (of Friuli) (2)
503. of Pawel-Rammingen (2)
504. of Penrhyn (1)
505. of Perche (1)
506. of Périgord (1)
507. of Pfirt (3)
508. of Picts (3)
509. of Pless (1)
510. of Poland (26)
511. of Polesworth (1)
512. of Polotsk (1)
513. of Pomerania (4)
514. of Pomerania-Stettin (1)
515. of Portugal (7)
516. of Portugal, of Braganza (1)
517. of Priest (1)
518. of Prum (1)
519. of Rascia, of Vukanovi? (1)
520. of Ravensberg (1)
521. of Reginar (2)
522. of Rethel (1)
523. of Reuss (1)
524. of Rheineck, of Salm (1)
525. of Rheinfelden (2)
526. of Ringleheim (1)
527. of Robert (1)
528. of Rooksnest surrey (1)
529. of Rosenburg (1)
530. of Rosenfeld (1)
531. of Rott (1)
532. of Rugia (1)
533. of Rumigny (1)
534. of Rurik Dynasty (11)
535. of Russia (11)
536. of Rügen (1)
537. of Saarbrücken (1)
538. of Saint Omer (1)
539. of Saint-Simon (1)
540. of Salisbury (1)
541. of Sardinia (4)
542. of Savoi (1)
543. of Savoie (1)
544. of Savoy (15)
545. of Savoy-Genoa (1)
546. of Saxe (1)
547. of Saxe-Altenburg (2)
548. of Saxe-Coburg and Gotha (7)
549. of Saxe-Coburg and Gotha, House of Wettin (2)
550. of Saxe-Coburg-Gotha, House of Wettin (1)
551. of Saxe-Coburg-Saalfeld (2)
552. of Saxe-Eisenach (2)
553. of Saxe-Gotha (2)
554. of Saxe-Gotha-Altenburg (1)
555. of Saxe-Hildburghausen (3)
556. of Saxe-Meiningen (2)
557. of Saxe-Weimar (1)
558. of Saxe-Weimar-Eisenach (1)
559. of Saxe-Weissenfels (1)
560. of Saxe-Wittenberg (3)
561. of Saxe-Zeitz (1)
562. of Saxony (11)
563. of Saxony (Saxe) (1)
564. of Sayn-Wittgenstein (2)
565. of Schauenburg (1)
566. of Schaumburg (1)
567. of Schaunberg (1)
568. of Schlesien Liegnitz (1)
569. of Schleswig (1)
570. of Schleswig-Holstein (1)
571. of Schleswig-Holstein-Sonderburg-Augustenburg (6)
572. of Schleswig-Holstein-Sonderburg-Beck, von Holstein-Beck, von Ziedewitz (1)
573. of Schleswig-Holstein-Sonderburg-Glucksburg (3)
574. of Schleswig-Holstein-Sonderburg-Glücksburg (5)
575. of Schleswig-Holstein-Sonderburg-Glücksburg, House of Oldenburg (1)
576. of Schwarzburg-Sondershausen (1)
577. of Schweidnitz (Świdnica) (1)
578. of Scotland (7)
579. of Scotland de Huntingdon (1)
580. of Seville (1)
581. of Shaftesbury (1)
582. of Sheba (1)
583. of Sheppey (1)
584. of Shrewsbury (1)
585. of Sicily (9)
586. of Sidon (1)
587. of Sigurd (1)
588. of Silesia-Glogau (1)
589. of Simmern (2)
590. of Slupsk (3)
591. of Slutsk (1)
592. of Smolensk (3)
593. of Solms-Laubach (4)
594. of Somerville (1)
595. of Sommerschenburg (1)
596. of Southwark (1)
597. of Spain (4)
598. of Spoleto (1)
599. of Sponheim (1)
600. of Staden (1)
601. of Stolberg (1)
602. of Stone Shropshire De Stafford (1)
603. of Strathbogie (6)
604. of Sulzbach (4)
605. of Supplinburg (1)
606. of Susa (1)
607. of Suzdal (2)
608. of Swabia (4)
609. of Swabia (Linzgau) (1)
610. of Swynford and Lancaster de Roet (1)
611. of Süpplingenburg (1)
612. of Tankerville (1)
613. of Teck (3)
614. of Tegeingl (1)
615. Of Tellico (1)
616. of the Bani Cays Aylân (1)
617. of the Berbers (1)
618. of the Cenél Conaill dynasty (2)
619. of the Cenél nEógain dynasty (5)
620. of the Franks (3)
621. of the Gaini (1)
622. of the Khozâites (1)
623. of the Palatinate (4)
624. of the Palatinate-Neuburg (1)
   625. of the Palatinate-Zweibrücken (1)
626. of the Palatine of Neuburg (2)
627. of the Rhine (1)
628. of the Tatars (1)
629. of the Tower (1)
630. of the Two Sicilies (5)
631. of the Two Sicilies (Naples and Sicily) (1)
632. of the Uí Néill dynasty (1)
633. of the Visigoths (1)
634. of Thuringia (8)
635. of Totnes (1)
636. of Toulouse (3)
637. of Tours (2)
638. of Trotta-Treyden (1)
639. of Troy (2)
640. of Troyes (1)
641. of Tver (2)
642. of Tübingen (1)
643. of Uglitsch (3)
644. of Upper Lorraine (1)
645. of Uppsale Eriksson (1)
646. of Valois (6)
647. of Valois and of the Vexin (1)
648. of Valois of Angoulême (1)
649. of van Rode (1)
650. of Varteig (1)
651. of Vaudémont (2)
652. of Verdun (1)
653. of Vermandois (3)
654. of Viennois (1)
655. of Vitebsk (1)
656. of Vladimir (2)
657. of Volgoda (1)
658. of Volok (1)
659. of Waldeck (1)
660. of Waldeck and Pyrmont (2)
661. of Wales (9)
662. of Wallingford (1)
663. of Wedderburn (1)
664. of Welf (7)
665. of Werle (4)
666. of Werle-Güstrow (1)
667. of Wessex (6)
668. of Westphalia (1)
669. of Wettin (48)
670. of Wettin, of Habsburg-Lorraine (1)
671. of Wigmore (1)
672. of Winchester (1)
673. of Wittelsbach (14)
674. of Woodstock (7)
675. of Worms (1)
676. of Worms and Rheingau (3)
677. of Wroclaw (1)
678. of Württemberg (7)
679. of Württemberg-Winnental (1)
680. of York (15)
681. of Ysenburg And Budingen (1)
682. of Ysenburg and Büdingen (2)
683. of Ysenburg und Büdingen (1)
684. of Ysenburg-Büdingen (1)
685. of Zeutch (1)
686. of Zähringen (17)
687. Offell (2)
688. Offen (1)
689. Offer (1)
690. Offerman (1)
691. Officer (47)
692. Offiler (1)
693. Offin (1)
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739. Old (7)
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761. Oldroyd (49)
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937. Ostler (44)
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1025. Oxer (17)
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1027. Oxley (129)
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1029. Oxtaby (Oxtarby, Oxterby, Oxtoby, Oxterby) (3)
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1038. O`Kaine (1)
1039. O`Kane (6)