Isabelle was the daughter of Roger de Ghistelles[1] and Elisabeth Dudzeele.[2]
She married Arnould de Gavre d’Escornaix and together they were parents of a large family, including among their youngest children a daughter Catherine. Isabelle died before 5 March 1435 and was buried in the church of Escornaix.[3]
Abt 1360 - Bef 1435 (< 74 years)