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 

 Princess Of France Alix Capet
Princess Of France Alix was born about 1170 in France.  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