Nielsen Hayden genealogy
Ancestors of William I Talvas
- 1062 ┌── Ivo de Bellême ( - Aft 1005)
┌── Guillaume I of Bellême (Between 960 and 965 - Aft 1027)
│ └── Godehilde ( - Aft 1005)
│
William I Talvas ( - Between 1060 and 1062)
└── Mathilde de Condé-sur-Noireau ( - Abt 1033)