| Father | Sir Patric FitzDolfin Offerton (b. about 1130, d. about 1182) |
| Mother | Cecilia De Fraser (b. about 1145) |
| Son | William Washington, II+ (b. about 1182, d. 1239) |
| Pedigree Chart |
| Birth | 1160 | William FitzPatrick De Washington de Hertburn was born in 1160 in Hertburn, Northumberland, EnglandBG. |
| Death | 1194 | He died in 1194 at age ~34 in Washington Manor, Sutherland Co. Durham, EnglandBG. |
| Last Edited | 7 December 2020 |