


| O | 44 |
| OAKES | 43a |
| OAKLEY | 45 - 78 |
| OAKUM | 44 |
| OAS | 44 |
| OBERBILLIG | 13 - 44 |
| OBERG | 44 |
| OBERHOLZER | 44 |
| OBERLAND | 44 |
| OBERLE | 21 |
| OBERMANN | 76 |
| OBIE | 32 |
| OBLIGETNETE | 44 |
| OBLINGER | 17 |
| O'BOYLE | 60 |
| O'BRIAN | 44 |
| O'BRIEN | 16 - 43 - 44 - 46 - 48 - 55 - 89D |
| OBRY | 43 |
| OCHS | 37 - 44 - 69 - 89A |
| OCKLER | 44 |
| O'CONNELL | 1 - 32 - 43 - 44 - 46 - 55 - 77 |
| OCONNOR | 22 |
| O'CONNOR | 6 - 21 - 33 - 43 - 44 - 46 - 55 - 60 - 77 - 83 - 89A - 89D |
| O'DAY | 44a |
| ODDEN | 41 |
| O'DEA | 55 |
| O'DELL | 43 |
| ODERSON | 44 |
| O'DONNELL | 32 - 44 - 82 |
| ODRONEIC | 46 |
| OEHLDRICH | 14 - 87 |
| OEHLHOF | 85 |
| OEHLKE | 89C - 89D |
| OEHMICHEN | 61 |
| OELDRICH/HEMB | 14 |
| OELERICH | 83 |
| OELHAFEN | 32 |
| OELHOFF | 82 |
| OELKE | 44 |
| OELRICH | 14 |
| OEMICHEN | 14 - 82 |
| OERDING | 30 |
| OESAU | 20 - 43 - 82 |
| OESTREICH | 6 - 22 - 33 - 35 - 43 - 44 - 44aa - 89A - 89C |
| OESTRICH | 89A |
| OETTINGER | 83 |
| OEXLE | 61 |
| O'FALLON | 47 |
| OGLER | 73 |
| O'GRADY | 43 - 60 |
| O'HALLORAN | 55 |
| O'HARA | 43 - 44 |
| OHDE | 44 |
| O'HEARN | 32 - 44 - 46 - 55 |
| OHEARN | 26 |
| O'HERRIN | 83 |
| OHLER | 44 |
| OHLESON | 44 |
| OHLHUES | 44 |
| OHLSEN | 12 - 43 - 44 |
| OHLSON | 44 |
| OHM | 44 |
| OHR | 89C |
| OHRT | 89C |
| OHSE | 61 |
| O'KEEFE | 55 |
| OKONEK | 21 |
| OKONSKA | 43a |
| OKONSKI | 43a |
| O'KONSKI | 44 |
| O'KROLEY | 89A |
| OLANDER | 44 |
| OLAYVAR | 44 |
| OLCHEWSKA | 46 |
| OLCOTT | 43 |
| OLDENBERG | 44 |
| OLDERSON | 44 |
| O'LEARY | 43 - 44 - 44a - 46 - 55 - 60 |
| OLESEWSKI | 33 - 44 |
| O'LESKE | 43 |
| OLESON | 41 - 44 |
| OLEWINSKI | 66 |
| OLIEN | 89C - 89D |
| OLIG | 21 - 57 |
| OLIVER | 46 |
| OLKS | 44 |
| OLLECH | 66a |
| OLLENDORF | 32 - 33 - 44 - 89A |
| OLLINGER | 43 |
| OLLMANN | 17 |
| OLM | 32 - 33 - 44 - 50 - 56 - 70 - 76 - 82 |
| OLMSTED | 44 |
| OLMSTEDT | 44 |
| O'LOUGHLIN | 6 - 55 |
| OLP | 17 - 32 - 44 - 53 - 76 - 78 |
| OLSDATTER | 27 |
| OLSEN | 2 - 66 |
| OLSEN | 2 - 27 - 41 - 44 - 89C |
| OLSON | 2 - 5 - 6 - 7 - 16 - 27 - 32 - 33 - 35 - 41 - 43 - 44 - 45 44a - 77 - 79 - 81A - 89A - 89C - 89D - 90 |
| OLSSON | 44 |
| OLVERS | 44a |
| OLSZEWSKA | 46 |
| OLSZEWSKI | 43b |
| O'MALLEY | 43 - 44 - 89C |
| OMAN | 89A |
| O'MEARA | 44 |
| O'MELIA | 43 |
| OMER | 44 |
| O'NEIL | 21 - 32 - 43 - 44 - 55 - 60 |
| ONEIL | 60 |
| O'NEILL | 46 - 55 |
| ONER | 87 |
| O'NIELL | 55 |
| ONSAGER | 5 |
| OPICHKA | 26 - 32 - 43 - 44 - 66 |
| OPICKA | 18 |
| OPPELT | 21 |
| OPPEN | 5 - 41 - 44 |
| OPPENHEIM | 89A |
| OQUIST | 44 |
| ORCHEKOWSKI | 43a - 43 |
| ORCHEKOWSKY | 43a - 44 |
| ORCHOKOWSKA | 43a |
| ORDING | 30 - 32 - 43 - 44 - 63 - 66a |
| ORENSTEIN | 44 |
| ORGEMAN | 46 |
| ORLEBECK | 33 |
| ORLOPP | 44 |
| ORNALES | 33 |
| ORNES | 44 |
| OROPEZA | 44 |
| O'ROUKE | 16 |
| OROURK | 22 - 44 - 89D |
| O'ROURK | 21 |
| O'ROURKE | 16 - 60 |
| ORPIN | 43 |
| ORR | 44 |
| ORTEGA | 44 |
| ORTH | 7 - 13 - 33 - 43 - 44 - 72 - 83 - 89B |
| ORTIZ | 35 |
| ORTLEPP | 87 with Anna Krueger |
| ORTON | 44 |
| ORVIS | 89A |
| ORZOL | 44 |
| OSBORN | 44 |
| OSBORNE | 44 |
| OSCHWALD | 21 - 22 - 23 |
| OSEK | 69 |
| OSESEK | 43 - 43a - 44 |
| O'SHEA | 21 - 60 |
| OSIECZANEK | 6 - 43 - 43a - 44 |
| OSIK | 44 |
| OSOWICKI | 43b |
| OSPEDALE | 32 |
| OSSIECK | 43a |
| OSTBY | 89A |
| OSTEN | 44 - 64 |
| OSTENFELDT | 44 |
| OSTERLOTH | 44 - 61 |
| OSTERMANN | 44 |
| OSTERTAG | 43 |
| OSTRANDER | 32 |
| OSUESON | 2 |
| OSUFSON | 2 |
| O'SULLIVAN | 60 |
| OSULSON | 2 - 44 |
| OSVALD | 39 |
| OSVALDA | 39 |
| OSWALD | 16 - 26 - 32 - 36 - 39 - 44 - 55 - 66 - 89A - 89D |
| OSZYK | 69 |
| OTEK | 33 |
| OTHERSALL | 44 |
| OTHERSON | 44 |
| OTIS | 43 - 89A - 89C - 89D |
| O'TOOLE | 89B |
| OTRADOVEC | 34 |
| OTT | 21 - 32 - 40 - 41 - 44 - 63 - 70 - 87 - 89A - 89C - 89D |
| OTTE | 46 - 89A |
| OTTELIEN | 50 - 77 |
| OTTELSON | 44 |
| OTTERSTAETTER | 44 |
| OTTESEN | 2 |
| OTTO | 2 - 7 - 8 - 16 - 17 - 32 - 40 - 43 - 44 - 46 - 53 - 75 79 - 82 - 84 - 87 - 89C - 89D |
| OTTOSON | 44 |
| OTTOW | 89A |
| OTTUM | 33 |
| OUDINOT | 44 |
| OUIMETTE | 44 |
| OUKER | 43 |
| OURADA | 36 - 44 - 66 - 77 |
| OURADA? | 48 |
| OURADNIK | 32 - 44 - 63 - 89D |
| OVERLEE | 44 |
| OVERMAN | 44 |
| OVERMANN | 44 |
| OVES | 18 |
| OWART | 43 - 44 - 89D |
| OWEN | 44 - 63 |
| OWENS | 32 - 44 - 46 - 58 - 89A |
| OWSLEY | 44 |
| OXNOWD | 41 |
| OYEN | 46 |
| OZGA | 32 - 43 - 43a - 44 - 89D |
| OZIEMKOWSKI | 43b |
| OZIOL | 44 |
| OZMENT | 33 |
| OZTERNAN | 44 |