Jean I De Beaufort 
Jean I De was born about 1380. Jean I De's father is Jacques II De Beaufort and his mother is Jeanne De Brus. His maternal grandparents are Richard De Brus and Marguerite De Neville. He is an only child.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.
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Ancestor Pedigree Chart
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*There are earlier generations for the ancestor(s) indicated. See their page(s) for details (click name)
- b.~ 1340
- b.~ 1380
- b.~ 1142 in Of, Annandale, Dumfrieshire, Scotland d.1215
- b.~ 1185 in Annadale, Dumfrieshire, Scotland d.1245
- b.1144 in Scotland
- b.1210 in Annandale, Dumfriesshire, Scotland d.31 May 1295 in Priory, Lochmaben, Dumfriesshire, Scotland
- b.1144 in Huntingdonshire, England d.14 Jun 1219 in Jedburgh, Roxburghshire, Scotland
- b.~ 1195 in Huntingdon, Huntingdonshire, England d.1251
- b.~ 1174 in Of, Cheshire, England d.06 Jan 1233
- b.<Feb 1296
- b.~ 1345
- b.~ 1310
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Jean I De and Marie De were married in a religious ceremony on March 18th, 1425. They have a son named Jean II De.