Beatrice married Count of Ponthieu and Montreuil John I Talvas in 1174 in France. John (son of Count of Ponthieu Guy II Talvas and Ida de St. Pol) was born about 1140 in Montreuil, Normandy, France; died in 1191. [Group Sheet] [Family Chart]
William married Countess of the Vexin Alys Capet on 20 Aug 1195. Alys (daughter of King of France Louis VII "The Younger" Capet and Constance Burgundy) was born on 4 Oct 1160; died about 1220. [Group Sheet] [Family Chart]
Marie married Count of Dammartin II Simon in 1184/1234. II was born about 1180 in Dammartin, Seine-et-Marne, France; died on 21 Sep 1239. [Group Sheet] [Family Chart]
Johanna married King of Castile and Leon III Ferdinand in 1237 in Burgos, Castile, Spain. III (son of King of Leon IX Alphonso and Queen of Castile Berengaria) was born in 1199; died on 30 May 1252 in Seville, Spain. [Group Sheet] [Family Chart]