Simon Count Of Dammartin
Simon was born in 1180 in Dammartin, Seine-et-Marne, Ile-de-France, France.¹   He died at the age of 59 on September 21st, 1239 in Abbéville, Essonne, Ile-de-France, France.¹ 

 Marie Countess Of Ponthieu
Marie was born on April 17th, 1199 in Aumale, Seine-Maritime, Haute-Normandie, France.¹   She died at the age of 51 on September 9th, 1250 in Abbéville, Essonne, Ile-de-France, France.¹ 

 Jeanne De Dammartin
Jeanne was born about 1216 in Dammartin, Seine-et-Marne, France.¹   She died on March 15th, 1279 in Abbeyville, Somme, France.¹