Guillaume IV De Bethune 
Guillaume IV De was born before 1280. Guillaume IV De's father was Guillaume III De Bethune and his mother was Jeanne De Nesle. His paternal grandfather was Guillaume II De Bethune and his paternal grandmother is Beatrice De Hebuterne; his maternal grandparents were Jean I De Nesle and Jeanne De+ Dammartin. He was an only child. He died on April 3rd, 1340.General Notes
SOURCES: LDS FHL Ancestral File # (familysearch.org)
"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.> 1130 in Bethune, Artois/Pas-de-Calais, France d.10 Jan 1191 in Battle of Acre, Palestine
- b.~ 1158 in Bethune, Pas-de-Calais, Normandy, France d.1213
- b.~ 1130 in St. Pol., Normandy, France d.~ 1192
- b.~ 1184 in Meulebeke, Flandre-Ouest, Belgium d.24 Aug 1243 in Lokeren, Flandre-Orientale, Belgium
- b.~ 1135 in Tenremonde, Lille, Nord, France d.18 Apr 1224
- b.~ 1166 in France d.01 Apr 1244
- b.~ 1150 in Molembeque, Rosoy, Oise, Picardy, France
- b.~ 1217 d.> 1247
- b.~ 1185
- b.~ 1240 d.~ 1279
- b.~ 1220
- b.< 1280 d.03 Apr 1340
- b.1095 d.1153
- b.~ 1153 d.1214
- b.~ 1118
- b.~ 1183 d.<Feb 1226
- b.~ 1160
- b.~ 1215 d.02 Feb 1292
- b.< 1142
- b.~ 1164 d.24 Jan 1237
- b.< 1142
- b.~ 1195
- b.1118 in Montfort-Sur-Risle, Eure, France d.13 Mar 1181
- b.> 1165 d.03 Feb 1216
- b.~ 1138 d.~ 1215
- b.~ 1253 d.29 Oct 1280
- b.~ 1110 in Dammartin, Seine-Et-Mairne, France d.1183
- b.~ 1148 in Dammartin, Seine-Et-Mairne, France d.20 Sep 1200 in Londres, Angleterre, France
- b.~ 1128 in Wellingford, Oxfordshire, England
- b.~ 1195 in Dammartin, Seine-et-Marne, France d.21 Sep 1239 in Abbeville, Somme, France
- b.~ 1093 in Clermont, Oise, France d.~ 1162
- b.~ 1148 in Dammartin, S-E-Mer, France
- b.~ 1115 in Dammartin, Isle of France d.>20 Jan 1183
- b.~ 1220 in Dammartin, France d.15 Mar 1279 in Abbeville, France
- b.~ 1142 in Montreuil, Flandres, France d.30 Jun 1191 in Saint-Jean d'Acre, Palestine
- b.~ 1177 in Ponthieu, Flandres, France d.BET 4 AND 6 OCT 1221
- b.< 1164
- b.17 Sep 1199 in Aumale, Normandy d.Sep 1250 in Normandy
- b.BET 1119 AND 1120 in Reims, Champagne, France d.18 Sep 1180 in Paris, Isle de France
- b.04 Oct 1160 in Paris, Seine, Ile-de-France, France d.BET 1218 AND 1221 in Castile, Spain
- b.~ 1136 in Toledo, Castile d.04 Oct 1160
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They had two sons named Jean I De and Mathieu De.