Marie de Ponthieu, Countess of Montreuil, was born 17 April 1199 to William IV of Ponthieu (1179-1221) and Alix de Vexin (c1170-c1220) and died 1251 of unspecified causes. She married Simon de Dammartin (1180-1239) 1208 JL . She married Mathieu de Montmorency (-1250) 1240 JL . William I of England (1027-1087), Alfred the Great (849-899)/s, Charlemagne (747-814)/s, Hugh Capet (c940-996)/s, Rollo of Normandy (860-932)/s.


Offspring of Simon de Dammartin, Comte d'Aumale and Marie de Ponthieu (1199-1251)
Name Birth Death Joined with
Jeanne de Dammartin (1216-1279) 1216 16 March 1279 Ferdinand III, King of Castile (1199-1252) Ferdinand III, King of Castile (1199-1252) Jean de Nesle (-1292)
Mathilde de Dammartin (-aft1256)
Maria de Dammartin (c1220-c1279) 1220 1279 Jean II de Pierrepont (c1184-1251)
Philippa van Dammartin (aft1220-bef1281) 1220 1281 Raoul II de Lusignan (c1200-c1246) Raoul II de Coucy (-1250) Raoul II de Lusignan (c1200-c1246) Raoul II de Coucy (-1250) Otto II van Gelre (c1215-1271)



Footnotes (including sources)

‡ General
2 Wedding 2
  • sometime between September 1240 and 15 December 1241