Guillaume III Count of Ponthieu
Birth date:
1179
Birth place:
, , Ponthieu, Flandres
 
Death date:
  4 OCT 1221
Death place:
  , , , France

Ponthieu Family

Parents:
Father: John I Montgomery De Ponthieu (Comte De Ponthieu)
Mother: Beatrice Candavaine De St. Pol
Spouse:
Spouse: Alix de France
 
Siblings:
Adele De Ponthieu
Guillaume III Count of Ponthieu
Children:
Marie J. Ponthieu
Maria de Ponthieu
Marie
Marie De Ponthieu
Louis
Child 1
Countess of Blois
Aumale Joan De Ponthieu
Ela de Ponthieu
Isabel
Marguerite Comtesse De Blois
Marie Countess Montr
Louis
Child of England
Hugh of Wells
Marie of Blois Abbess of Fontevrault
Theobald Count of Blois
Louis
Child of England
Marie