Clotilde Radegonde De Cupere 
General Notes
"Ancestors/Descendants of Royal Lines" (Contributors: Manuel Abranches de Soveral, Reynaud de Paysac, F.L. Jacquier <Genealogy of Lewis Carroll, Justin Swanstrom, The Royal Families of England Scotland & Wales by Burkes Peerage; Debrett's Peerage & Baronage; Table of descendants French Canadian Genealogical Society; Families of Monfort-sur-Risle & Bertrand de Bricquebec; The Dukes of Normandy, XXXXI, Paul Leportier, Claude Barret>, H.R. Moser <Burke Peerage>, L. Orlandini, O.Guionneau, L.B. de Rouge, E. Polti, A.Terlinden <Genealogy of the existing British Peerage, 1842>, L. Gustavsson, C. Cheneaux, E. Lodge, S. Bontron <Brian Tompsett>, R. Dewkinandan, C. Donadello; Scevole de Livonniere, H. de la Villarmois) http://geneastar.org.
‌Clotilde Radegonde De and Charls Antoine De were married in a religious ceremony in 1703. They had a son named Charles De.
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Children
Charles De Beaufort
Charles De was born on August 19th, 1704 in Saint Omer. He died at the age of 76 on August 19th, 1780 in Arras. He was buried in Eglise (Church) de Mondicourt.