SOURCES: "Ancestors of Valery Giscard d'Estaing" and "Ancestors/Descendants of "Jean d'Aubigne (d'Aubigny) and Catherine de l'Estaing" http://www.geneastar.org.
Isabeau D' and Jean II De were married in a religious ceremony on November 8th, 1401. They had a son and a daughter, named Robert De and Catherine De.