Guillaume III, Count of Ponthieu
Birth:
1179
Ponthieu, Flandres, France
Death:
4 Oct 1221
France
Individual Information  
FCID:16080:12010      
Parents
Father:
Jean I Count of Ponthieu & Montreuil
Mother: Béatrice de Saint Pol
Marriage(s)
Family Group
Alix Princess of France
md. 20 Aug 1195 Castile
  Children
1.  
Marie (Jeanne) Countess of Ponthieu & Montreuil
b. 17 Apr 1199