Isabeau De Montigny 
General Notes
SOURCES: "Ancestors/Descendants of Royal Lines" (Contributors: Reynaud de Paysac, H.R. Moser <Burke Peerage>), O.Guionneau, E. Polti, A.Terlinden <Genealogy of the existing British Peerage, 1842, and E. Lodge>)
Isabeau De and Nicolas III De were married in a religious ceremony before 1346. They had a son and a daughter, named Othon II De and Jeanne De.
