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| Name | Total | Name | Total | Name | Total | Name | Total | Name | Total |
|---|---|---|---|---|---|---|---|---|---|
| ORDEN, Van | 53 | OHME | 1 | Oakes | 1 | ORMSTON | 2 | Osule | 1 |
| OTTERSON | 1 | O DONNAL | 1 | ORTON | 3 | Osborne | 12 | Orde, De | 3 |
| OTTESON | 2 | ORREN | 5 | Onines | 1 | Oldweiler | 1 | Olafsdatter | 3 |
| ORME | 6 | OTT | 1 | Oliver | 3 | OLNEY | 1 | Ordonez | 1 |
| OLSEN | 48 | OSTLER | 2 | ORPHUS | 2 | OVERTON | 1 | Okeston | 2 |
| OVERSON | 8 | OSBORN | 18 | OPENSHAW | 4 | ORMSBEE | 4 | Oisy, De | 3 |
| OLSON | 17 | OWSLEY | 2 | OLAFSSON | 14 | Olaf, O' | 1 | Oakley, De | 2 |
| ORAM | 1 | OLFSON | 1 | OLAFSDOTTER | 2 | Ogle, De | 4 | Ormsby | 1 |
| OGDEN | 35 | OATLEY | 1 | ODINSSON | 2 | Ouyngton | 1 | Oglander | 1 |
| Owens | 20 | OAKLEY | 1 | ONUNDSSON | 1 | Orseolo | 1 | Olavsdatter | 1 |
| OWEN | 30 | OURADA | 1 | OTTARSSON | 1 | OGLE (OGELL) | 5 | Ogmundsson | 1 |
| OLDRIGHT | 1 | Osman | 1 | OGLE | 51 | OLDAGE | 3 | - | - |