Isabeau De Brienne-Beaumont 
Isabeau De was born about 1288. Isabeau De's father is Jean De Brienne-Beaumont and her mother is Jeanne De La Guerche. Her paternal grandparents are Louis De+ Brienne and Agnes De+ Beaumont-au-Maine. She had a brother and a sister, named Robert De and Anne De. She is the youngest of the three children.General Notes
SOURCES: LDS FHL Ancestral File # (familysearch.org)
WEB:
"Ancestors/Descendants of Royal Lines" (Contributors: F. L. Jacquier (History of Charlemagne by Christian Settipani); L. Orlandini, Manuel Abranches de Soveral, Reynaud de Paysac, F.L. J P de Palmas (Aurejac et Tournemire; Frankish line; The Complete Peerage}, 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), A. Brabant ("Dynastie Montmorency, Michel d'Herbigny), Paul Leportier, Claude Barret, H.R. Moser (Burke Peerage), O.Guionneau, L.B. de Rouge, E. Polti, N. Danican (Britain's Royal Families; Buthlaw, Succession of Strathclyde, the Armorial 1961-62) A.Terlinden (Genealogy of the existing British Peerage, 1842), L. Gustavsson, C. Cheneaux, E. Lodge, S. Bontron (Brian Tompsett), R. Dewkinandan, H. de la Villarmois, C. Donadello; Scevole de Livonniere, H. de la Villarmois, I. Flatmoen, P. Ract Madoux (History of Morhange; Leon Maujean; Annuaire de Lorraine, 1926; La Galissonniere: Elections d'Arques et Rouen), Jean de Villoutreys (ref: Georges Poull), E. Wilkerson-Theaux (Laura Little), O. Auffray, A. Brabant (Genealogy of Chauvigny of Blot from "Chanoine Prevost Archiviste du Diocese de Troyes Union Typographique Domois Cote-d'Or 1925), Emmanuel Arminjon (E Levi-Provencal Histoire de l'Espagne Andalouse), Y. Gazagnes-Gazanhe, R. Sekulovich and J.P. de Palmas ("notes pierfit et iconographie Insecula", Tournemire), H de Riberolles (Base Tournemire), Franck Veillon; ,(Histoire Généalogique de la Maison de Hornes, Bruxelles 1848; Notice Historique Sur L'Ancien Comté de Hornes, Gand 1850; Europäische Stammtafeln, Marburg 1978); E.Driant / "La Maison de Damas" par Hubert Lamant, 1977 (Bibliothèque municipale d'Eaubonne)
........... 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.~ 1128
- b.~ 1150
- b.~ 1130
- b.~ 1186 in Acre, Palestine d.21 Mar 1237 in Constantinople, Turkey
- b.~ 1105
- b.~ 1150
- b.~ 1118 in Bar-Le-Duc, Meuse, France
- b.~ 1228
- b.1137 in Toledo, Spain d.22 Jan 1188 in Benavente, Zamora, Castile
- b.15 Aug 1171 in Zamora, Leon, Spain d.24 Sep 1230 in Villaneuva de Sarria, Lugo, Spain
- b.BET 1148 AND 1151 in Coimbra, Portugal d.16 Oct 1188 in Valladolid, Spain
- b.~ 1196 in Leon, Spain d.12 Apr 1237 in Constantinople, Turkey
- b.11 Nov 1155 in Soria, Castile d.06 Oct 1214 in Gutierre Munoz, Avila, Castile
- b.~Jun 1180 in Burgos, Castile, Spain d.BET 8 NOV 1244 AND 1246 in Burgos, Castile, Spain
- b.13 Oct 1162 in Domfront, Normandy, France d.25 Oct 1214 in Las Huelgas, Burgos, Spain
- b.~ 1255
- b.> 1095 in Beaumont-sur-Sarthe, Pays de la Loire, France
- b.~ 1135 in Beaumont-sur-Sarthe, Pays de la Loire, France d.~ 1200
- b.~ 1117 in England
- b.~ 1178
- b.~ 1100
- b.~ 1150 in Egenoul, France d.> 1217
- b.~ 1235
- b.~ 1195
- b.~ 1288
- b.~ 1260
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They have a daughter named Jeanne D'.