Choose a letter to show families whose name starts with that letter.
. | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | Ü | V | W | Y | Z | (unknown) | ALL
| Surname | Spouses | |
|---|---|---|
| 1 | O'Brien | 3 |
| 2 | O'Connor | 1 |
| 3 | O'Donnell | 2 |
| 4 | O'Haver | 1 |
| 5 | O'Neal | 1 |
| 6 | Obbens | 2 |
| 7 | Oberman | 2 |
| 8 | Ochtendung | 2 |
| 9 | Odijk | 1 |
| 10 | Odlund | 2 |
| 11 | Oelke | 2 |
| 12 | Oellers | 2 |
| 13 | Oepker | 1 |
| 14 | van den Oever | 1 |
| 15 | Ofe | 2 |
| 16 | Oferman | 2 |
| 17 | Off | 2 |
| 18 | van Offeren | 1 |
| 19 | Ofman | 1 |
| 20 | Ogmans (oder Aegmans,Aimans) | 1 |
| 21 | Ogmans (oder Aegmans) | 1 |
| 22 | Ohligschleger | 1 |
| 23 | Ohnoutka | 1 |
| 24 | van Oijen | 1 |
| 25 | Oldiges | 1 |
| 26 | Olislagers | 1 |
| 27 | Olligschlaeger | 1 |
| 28 | Olligschläger | 5 |
| 29 | Olsen | 2 |
| 30 | Olson | 3 |
| 31 | Oltmer | 1 |
| 32 | Onweer | 1 |
| 33 | van Ooijen | 2 |
| 34 | Ooms | 2 |
| 35 | van Oort | 3 |
| 36 | van Oosten | 1 |
| 37 | Oosterhuis | 2 |
| 38 | Oosterman | 2 |
| 39 | Oostringa | 2 |
| 40 | op de Horst | 1 |
| 41 | Oppermans | 1 |
| 42 | Ordeman | 1 |
| 43 | Orender | 1 |
| 44 | Orlemans | 3 |
| 45 | Orthmann | 1 |
| 46 | van Os | 3 |
| 47 | Osborn | 3 |
| 48 | Osborne | 1 |
| 49 | Osteresch | 3 |
| 50 | Osterhagen | 1 |
| 51 | Osterhop | 2 |
| 52 | Osterwind | 1 |
| 53 | Ostry | 1 |
| 54 | Oswald | 1 |
| 55 | Ott | 3 |
| 56 | OTTE | 7 |
| 57 | Ottelia | 1 |
| 58 | Otten | 3 |
| 59 | den Otter | 3 |
| 60 | Zaerren (Moltzen, Ottisen) | 1 |
| 61 | Otto | 2 |
| 62 | Oudenaarden | 2 |
| 63 | Ouwenbroek | 2 |
| 64 | Oven | 1 |
| 65 | Ovenbeck | 2 |
| 66 | Overbeck | 1 |
| 67 | van Overbeeck | 1 |
| 68 | Kothen (Rottes, Kauhausen,Overbrock) | 1 |
| 69 | Overmann | 1 |
| 70 | Overmeyer | 1 |
| 71 | Overveldt te Overveldt | 1 1 2 |
| 72 | Owens | 1 |
| 73 | Übler | 1 |
| Total individuals: 123 Total Names: 74 |