William III Ponthieu Count of Ponthieu
William III was born in 1179 in Abbeville, Ponthieu, Picardie, France.¹   He died at the age of 42 on October 4th, 1221 in France.² 

 of France Capet Adele Alix
of France Capet was born about 1170.²   She died in 1221.

 of Ponthieu Countess of Ponthieu Marie Jeanne
of Ponthieu Countess of Ponthieu was born on April 17th, 1199 in Aumale, Seine-Maritime, France.  She died at the age of 51 in September 1250.²