Margaret, Marchioness of Namur

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Margaret de Courtenay
Marchioness of Namur
Reign 1229–1237
Countess consort of Vianden
Reign 1220–1252
Born c. 1194
Died 17 July 1270
Burial Marienthal monastery
Spouse Raoul, lord of Issoudun
Henry I, Count of Vianden
Issue Mathilde
Philip I
Henry I van Vianden
Yolanda of Vianden
Frederic of Vianden
House House of Courtenay
House of Sponheim? (by marriage)
Father Peter II of Courtenay
Mother Yolanda of Flanders

Margaret, Marchioness of Namur (c. 1194 – 17 July 1270) was ruling Marchioness of Namur in 1229-1237. She was the daughter of Peter II of Courtenay and Yolanda of Flanders.


Margaret (called Sybille in some sources) married Raoul, lord of Issoudun in 1210. She succeeded her husband as Lady of Châteauneuf-sur-Cher and Mareuil-en-Berry in 1216. Soon after the death of her first husband she married Henry I, Count of Vianden (c. 1190/1210 - 1252) in 1216. Henry was the son of Frederic III, Count of Vianden (c. 1160 - 1210), and Mechthilde (Mathilde) of Neuerburg (?). Another son, Frederick I, younger brother of Henry, inherited Neuerburg and married Cecilia of Isenburg, but that dynasty became extinct with the death of Frederick III of Neuerburg in 1332 (de).

Marchioness of Namur[edit]

Margaret became Marchioness of Namur after the death of her brother Henry II, Marquis of Namur in 1229, who had succeeded another brother, Philip II. Their grandfather had received the county as an inheritance as a nephew of Henry IV, Count of Luxembourg (Henry I of Namur). Margaret and her husband Henry I of Vianden (Henry III of Namur) ruled Namur until 1237 when they had to transfer Namur to Margaret's brother Baldwin II of Courtenay.[1] Henry and Margaret continued ruling Vianden. Henry V, Count of Luxembourg (1216 – 1281), maternal grandson of Henry IV, Count of Luxembourg (Henry I of Namur), invaded Namur and ruled it 1256-1264 as Henry IV (or III ?). Baldwin sold Namur in c. 1263 to his cousin Guy of Dampierre, count of Flanders and Henry was removed by military force but they made peace with family marriage.

Later life[edit]

After the death of her husband in 1252, Margaret entered a convent in Marienthal near Luxembourg and became a nun. She died in Marienthal on 17 July 1270 and was buried there.[2]


Margaret and Henry had the following children:[3]