Simon II Count de DAMMARTIN
Simon II Count de was born about 1180 in Dammartin, Seine-et-Marne, France.  He died on September 21st, 1239 in Abbeyville, Somme, France.

 Marie (Jeane) Countess of PONTHIEU & MONTREUIL
Marie (Jeane) Countess of was born on April 17th, 1199 in Aumaul, Normandie, France.  She died at the age of 51 in September 1250 in Normandy, France.

 Jeanne 'Joanna' de DAMMARTIn
Jeanne 'Joanna' de was born in 1216 in Dammartin, Seine-et-Oise, France.  She died in Abbeville, France.