Alberic II Cmte de Dammartin
Alberic II Cmte was born in 1135 in Dammartin, Seine-et-Marne, France.  He died at the age of 65 on September 19th, 1200 in London, Middlesex, England.

 Matilda de Ponthieu , of Clermont
Matilda was born in 1138 in Ponthieu, Ain, France.  She died after October 1200.

 Julianna de Dammartin
Julianna was born in 1165 in Dammartin, France.

 Agnes de Dammartin
Agnes was born in 1166 in Dammartin, Normandie, France.

 Simon II de Dammartin , Count\Dammartin & Aumale
Simon II 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.