Isabelle was the daughter of Raoul III de Tancarville and Hélissende de Beaumont. The date and place of her birth have not been found.
Her husband was Adam I de Villebéon, who she married in AFT 1178. The place has not been found. Their two known children were Adam (?-1284) and Gautier (c1207-1239).
|
Raoul III de Tancarville |
Guillaume de Tancarville |
Rabel |
+ | |||||
|
Théophanie de Penthièvre |
Étienne I de Penthièvre |
+ | ||||||
|
Havoise de Guingamp |
+ | |||||||
|
Hélissende de Beaumont |
Amaury I de Meulan |
Galéran IV de Meulan |
+ | |||||
|
Agnès de Montfort |
+ | |||||||
| | ||||||||
| |