Margaret, Marchioness of Namur
Margaret, Marchioness of Namur (c. 1194 – Marienthal, 17 July 1270) was ruling Marchioness of Namur, from 1229 to 1237. She was the daughter of Peter of Courtenay (d. 1219), Latin Emperor of Constantinople (1216-1219) and Yolanda of Flanders (d. 1219). By marriage to Henry I, Count of Vianden (d. 1252), she was Countess-consort of Vianden.
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