| OATEY | ||
| ElizabethP,P,P,P,P,P | ||
| O'BRIAN | ||
| PatrickC | born Abt 1890 | |
| O'DONNELL | ||
| Mary AlisonS,C | ||
| OFFER | ||
| EmilyC,C,P,P,P,P | born Jan 1835 | |
| ThomasP | ||
| OFTEDAL | ||
| Rhonda GailC,C,P,P | born 2 Jun 1962 | |
| ThelmerP | ||
| OGILVY | ||
| Eileen ElizabethP | ||
| OGLE | ||
| Maud EllenC,P,P,P,P,P,P,P,P | born 18 Nov 1888 | died 13 Oct 1976 |
| OKERLUND | ||
| Anne ElizabethS,C | born 1982 | |
| Jeffrey K.S,C,P | ||
| OLD | ||
| StephenC | born 3 Sep 1957 | |
| OLDFIELD | ||
| Eliza AnnC | born 26 Jan 1873 | died 22 Apr 1951 |
| JamesC,P,P,P | born Abt 1835 | |
| MaudS,C | born Abt 1876 | |
| OliverS,C | born Abt 1874 | |
| OLIVER | ||
| AnthonyS,C | born 20 Jul 1975 | |
| Dorothy HeathC | born 7 May 1907 | died 23 Jan 1985 |
| EdgarC,P | died 1913 | |
| MelindaS,C | born 9 Oct 1972 | |
| PhillipC,P,P | born 9 Apr 1940 | |
| OLSEN | ||
| Annie (Maggie) MargaretP | born 3 Feb 1871 | died 1 Jan 1926 |
| DoraP | ||
| OLSON | ||
| ArthurC,C,P,P | born 20 Jan 1898 | died 21 May 1953 |
| BertP | ||
| Elizabeth DeansC,P,P | born 25 Jul 1937 | |
| Miriam JoyC,P,P | born 22 May 1942 | |
| O'NEILL | ||
| SharonC,P,P,P,P | born 1956 | |
| ORAM | ||
| Eliza MaryC | born Abt 1867 | |
| ORSI | ||
| KathleenC | ||
| OSAIAN | ||
| ElizabethP | ||
| OSBORNE | ||
| AndrewS,S,C,C | ||
| Christine MayC | ||
| ScottC,P | ||
| TaliaS,C | born 5 Jun 2003 | |
| OSSINGTON | ||
| HelgaS,C,P,P | ||
| OWEN | ||
| Sarah JaneS,S,C,P,P,P,P,P | born 24 May 1891 | died 1 Feb 1941 |
| OWSLEY | ||
| Ashley MichelleS,C | ||
| Lindsay MarieS,C | ||
| Paul M.C,P,P | ||
| OXLEY | ||
| CarolynC |