| O’KELL | ||
| Marys,c,p,p,p,p,p,p,p,P | died Unknown | |
| OAKES | ||
| Sarahc,p,p,P | died Unknown | |
| OAR | ||
| Mary Elizabethc,P | born Private | |
| OCKENDEN | ||
| Clarac,p,P | died Unknown | |
| O'DEA | ||
| TerryC | born Private | |
| O'DONOHUE | ||
| NoeleneC | born Private | |
| OLIVE | ||
| Unknowns,c,P | born Private | |
| OPENSHAW | ||
| Amanda Janes,c,c,p,p,P | born Private | |
| RaymondP | born Private | |
| ORASNJAK | ||
| LucasC | born Private | |
| ORMAN | ||
| JamesC | died Unknown | |
| OTTILE | ||
| MsC | born Private | |
| OWEN | ||
| Henryc,P | died Unknown | |
| Maryc,P | born 1893, Merthyr Tydfil | died Unknown |
| Mary Annc,p,P | born 1873 | died 22 Dec 1950 |