Jean II De Ponthieu
Jean II was born about 1290 in Crecy-en-Ponthieu, Somme, France.

 Catherine D'Artois
Catherine was born about 1293 in Artois, France.  She died in November 1368 in Normandie.

 Blanche De Ponthieu
Blanche was born about 1320 in Crecy-en-Ponthieu, Somme, France.  She died on April 12th, 1387.

 Jeanne De Ponthieu
Jeanne was born about 1325 in Crecy-en-Ponthieu, Somme, France.  She died on May 30th, 1376.