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| NAME | TOWN | COUNTY | COUNTRY | PERIOD | MEMBER |
| O KANE | NORTHERN IRELAND | IRE | IRE | BEF 1940 | 264 |
| OLIVER | HILLMORTON | WAR | ENG | 1800+ | 385 |
| ORMAN | RUGBY | WAR | ENG | 1880+ | 385 |
| OSBORN | OXFORD | OXF | ENG | 1775 | 354 |
| OSBORN | WARWICKSHIRE | WAR | ENG | 1775 | 354 |
| NAME | TOWN | COUNTY | COUNTRY | PERIOD | MEMBER |
| O KANE | NORTHERN IRELAND | IRE | IRE | BEF 1940 | 264 |
| OLIVER | HILLMORTON | WAR | ENG | 1800+ | 385 |
| ORMAN | RUGBY | WAR | ENG | 1880+ | 385 |
| OSBORN | OXFORD | OXF | ENG | 1775 | 354 |
| OSBORN | WARWICKSHIRE | WAR | ENG | 1775 | 354 |