| Surname | Country | Prov/State | Earliest | Latest | Contact Details |
|---|---|---|---|---|---|
| UNDERWOOD | ENG | DEV | 1923 | Present | Carol Jenkins |
| UNDERWOOD | ENG | DEV | 1904 | 1923 | Carol Jenkins |
| UNDERWOOD | MLT | - | 1885 | 1904 | Carol Jenkins |
| UNDERWOOD | SCT | LKS | 1860 | 1885 | Carol Jenkins |
| UNWIN | CAN | BC | 1911 | Present | Carol Jenkins |
| UNWIN | ENG | YKS | 1871 | 1911 | Carol Jenkins |
| UPTON | ENG | LIN | 1370 | 1825 | Jean Ostrowski: 305-270 Simcoe Street, Victoria, BC V8V 1K7 |