Pierre married Alix DE THOUARS in Mar 1213. Alix (daughter of Gui DE THOUARS and Constance Of BRITTANY) was born in 1201; died in Oct 1221. [Group Sheet] [Family Chart]
Pierre married Margaret DE MONTAGU in 1235. [Group Sheet] [Family Chart]
Robert married Yolande DE COURCI in 1184. Yolande (daughter of Raoul I DE COUCY and Agnes Of HAINAULT) was born about 1168; died on 18 Mar 1222; was buried in Braine St. Ived. [Group Sheet] [Family Chart]