Lord of Coucy (died 1250) was a son of Enguerrand III and his wife MariedeMontmirail [fr]. In 1246 he succeeded his father as lord of Coucy. Raoul died
deMontmirail, heir of the preceding. Mathieu deMontmirail, heir of his brother. Élisabeth deMontmirail, nun in Mont-Dieu deMontmirail. Mariede Montmirail
Oise département served as the set for the castle of Montmirail in the modern day and the Cité de Carcassonne for the medieval castle. In the year 1123