Marie married Marquis of Namur Philip I Hainaut in 1205. Philip (son of Count of Hainaut Baldwin V Hainaut and Countess of Flanders Margaret Vaudermont I of Flanders) was born in 1174 in Mons, Hainaut, Belgium; died on 15 Oct 1212 in Namur, Belgium. [Group Sheet] [Family Chart]