Isabeau Mauvoisin
Parents
- Guy Mauvoisin ( - 1311), seigneur de Rosny
- Isabelle de Mello
Family
- Married with Jean II de Sancerre (c. 1260 - 1327), chevalier, comte de Sancerre
- Married with Jean de Heilly, seigneur de Heilly
- Married with Pierre V de Chambly, alias Pierre le Hideux (c. 1242 - aft. 1295), seigneur de Chambly, chambellan de Louis IX (Saint Louis), chambellan de Philippe IV (le Bel), issuing
