| Last Name | First & Mid Name | Birth Date | Death Date | Marriage Date | Residence Place | Family |
| O'BRIEN | Sean | 22-Dec-56 | Family #1 | |||
| O'BRIEN | Sharon Maureen | 6-Oct-88 | England | Family #1 | ||
| O'BRIEN | Family #1 | |||||
| O'DONOHUE | Robert | Family #4a | ||||
| O'Neill | Alice | Family #8 | ||||
| O’Brien | Mary Jane | Family #18 | ||||
| O’Dell | Family #17 | |||||
| Oberlander | Martha | 22-Jun-57 | 13 May 1883 | Family #17 | ||
| ODDI | Adele | Family #11 | ||||
| OFFORD | Roger Malcolm | 28-Jul-84 | Family #1 | |||
| OFFORD | Ruch Elizabeth | Family #1 | ||||
| OFFORD | Thomas Andrew | Family #1 | ||||
| OLAFSON | Carrie Grace | Canada? | Family #11 | |||
| OLAFSON | Jacqueline Ann | Canada? | Family #11 | |||
| OLAFSON | Kurt Thomas | Canada? | Family #11 | |||
| OLAFSON | Thomas Einar | Family #11 | ||||
| Oldsberry | George | 11 Mar 1837 | Family #17 | |||
| OLFERT | Diana | Family #11 | ||||
| OLLIS | Mabel Lilian | Family #1 | ||||
| Olliver | Charles | Family #15 | ||||
| Olliver | Ellen | ca 1849 | 1889 | 10 Jan 1874 | Family #15 | |
| OLSON | Lydia | 19 Oct 1881 | 1902 | Family #11 | ||
| OPATOUSKY | Winn | Family #11 | ||||
| ORFORD | Emily Agnes | 5 Mar 1870 | 26 Dec 1899 | Family #11 | ||
| ORFORD | John | Family #11 | ||||
| ORFORD | Mary | Family #11 | ||||
| ORR | James | 25 Feb 1868 | Family #1 | |||
| Orr | Minnie | 1874 | 21-Nov-40 | 1 May 1901 | Glasgow,Scotland | Family #1 |
| ORSON | Ellen | Canada? | Family #11 | |||
| ORSON | Gary | Canada? | Family #11 | |||
| ORSON | Leslie | Canada? | Family #11 | |||
| ORSON | Merlin | Family #11 | ||||
| OSIER | ? | Family #11 | ||||
| OSIER | Daniel | Canada? | Family #11 | |||
| OWENS | Barbara | Manitoba,Canada? | Family #11 | |||
| OWENS | Daryl | Family #11 | ||||
| OWENS | Robert | Manitoba,Canada? | Family #11 | |||