- Born circa 1025 in Alençon
- Assassinated on December 2, 1082 in Troarn, at Château de Bures sur Dives, at the approximate age of 56 years
Parents
- Guillaume II de Bellême, Guillaume Talvas ( - 1052), chevalier, seigneur de Bellême
- Haberge de Beaumont-au-Maine, dame de Montrevault
Family
- Married with Roger de Montgomery (1022 - 1094), comte de Shrewsbury, issuing
Robert II- Mathilde (1041 - bef. 1083)
- Arnulph Cimbricus