| Male Viscount of Hiesmer Thurston |
| Birth | 1000 | |
| Death | 1041 | |
| Burial | ||
| Marriage | ||
| Father | Count of Hiesmer Ansfried | F2768 Group Sheet | |
| Mother | ||
| Female Judith De Monterolier |
| Birth | 1004 | Normandy, France |
| Death | Yes, date unknown | |
| Burial | ||
| Father | ||
| Mother | ||
| Male + Vicount Richard D'Avranches |
| Birth | 1025 | |
| Death | 1082 | |
| Burial | ||
| Spouse | Emma De Conteville | F2766 | |
| Marriage | ||