She became a nun and joined the convent at Longchamp , serving alongside the abbey 's founder , Isabelle of France .
Agnes d'Harcourt was the daughter of Jean d'Harcourt .
Agnes d'Harcourt became a nun and joined the convent at Longchamp , serving alongside the abbey 's founder , Isabelle of France .
Agnes d'Harcourt was the daughter of Jean d'Harcourt .