Mahaut married Thomas Ii De Coucy Vervins, [SEIGNEUR DE VER about 1210 in Rethel, Ardennes, France. Thomas (son of Raoul I De Coucy, [SEIGNEUR DE MAR and Alix De Dreux) was born about 1184 in Boves, Somme, France; died in 1253; was buried in , Foigny, , France. [Group Sheet] [Family Chart]