Margaret, Marchioness of Namur

According to customs, Raoul's main domains passed to his distant cousin Guillaume de Chauvigny, who was also his brother-in-law, while Margaret claimed possession over Châteauneuf-sur-Cher and Mareuil-en-Berry.

In 1216, Margaret′s father Peter Courtenay (d. 1219) was elected Latin Emperor of Constantinople, and crowned in Rome by Pope Honorius III on 9 April 1217.

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.

In 1253, together with her brother, the Emperor Baldwin II, she petitioned the Pope on behalf of her grand-daughter Maria (born to Margaret's daughter Matilda and her husband John Angelos of Syrmia), thus securing papal consent for Maria's marriage to the Picardian noble Anselm of Cayeux.

1285) whose husband Anselm (Anseau) de Cayeux (the younger) worked for King Charles I of Naples.