Marguerite De Villehardouin 
Marguerite De was born in 1278. Marguerite De's father was Guillaume II De Villehardouin and her mother was Anna Angelina Doukaina. Her paternal grandfather was Geoffroi I De+ Villehardouin and her paternal grandmother is Elizabeth De+ Chappes. She had a sister named Isabelle De. She died at the age of 37 in 1315.General Notes
SOURCES: "Ancestors/Descendants of Royal Lines" (Contributors: M. Thompson, Reynaud de Paysac, H.R. Moser <Burke Peerage>), F.L. Jacquier, O.Guionneau, E. Polti, A.Terlinden <Genealogy of the existing British Peerage, 1842, L. Orlandini, R. Dewkinandan, and E. Lodge>).
They had a daughter named Isabella De.