Simon De Dammartin
Simon was born in 1180 in Dammartin, Seine Et Marne, , France.  He died at the age of 59 on September 21st, 1239 in Abbeville, Somme, , France.

 Marie De Ponthieu
Marie was born in 1186 in Aumale, Seine Maritime, , France.  She died at the age of 65 in 1251 in Abbeville, Somme, Picardie, France.

 Joan De Dammartin
Joan was born in 1208 in Dammartin, Seine-Et-Marne, , France.  She died at the age of 71 on March 16th, 1279 in Abbeville, , , France.