Fitz Osbern, William Hereford
| Birth Name | Fitz Osbern, William Hereford |
| Gender | male |
| Age at Death | 38 years, 1 month, 19 days |
| Birth date | 1033 (Poitiers, Vienne, Poitou-Charentes, France) |
| Death date | 20 February 1071 (Cassel, Nord, Nord-Pas-de-Calais, France) |