[1] She became the Lady of Méraude (Merode) when she purchased it from John the Blind, King of Bohemia, in 1342, until she left it to her son William I in 1353.

She was the fourth daughter of Philip of Artois and Blanche of Brittany.

Marie married John I, Marquis of Namur,[2] son of Guy of Dampierre, Count of Flanders and Marquis of Namur, and his second wife Isabelle of Luxembourg.

They were married by contract in Paris on 6 March 1310, confirmed in Poissy, January 1313.

Since he was fifteen and a minor, she became Regent of Namur until her reached his majority.