Thomas married Jeanne De Flandre, [et Hainaut] on 2 Apr 1237. Jeanne (daughter of Baudouin Ix (Vi) Flanders & Haina, LT and Marie De Champagne) was born in 1188 in , Valenciennes, Nord, France; died on 5 Dec 1244 in , Marquette les Li, Nord, France; was buried in , Marquette les Li, Nord, France. [Group Sheet] [Family Chart]