| Father | Walter de Washington (b. about 1207, d. 14 May 1264) |
| Mother | Joan de Whitchester (b. 1220, d. 1266) |
| Son | Robert de Washington+ (b. about 1270, d. after 18 August 1324) |
| Pedigree Chart |
| Birth | 1238 | William de Washington was born in 1238 in Washington, Durham, England, United KingdomBG. |
| Death | 1288 | He died in 1288 at age ~50 in Washington, Durham, EnglandBG. |
| Last Edited | 7 December 2020 |