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.