Guillaume I De Mello 
Guillaume I De was born about 1163. Guillaume I De's father is Dreux IV De Mello and his mother is Irmengarde De+ Monchy. His paternal grandfather was Dreux III De Mello and his paternal grandmother is Nm De Saint Bris; his maternal grandparents are Dreux III+ De Monchy and Edith De+ Warenne. He had a sister named Agnes De. He had a half-brother and three half-sisters, named Guy De+, Elizabeth De, Helvide De+ and Odette De. He died in 1248.General Notes
SOURCES: LDS FHL Ancestral File # (family search. org)
"Ancestors/Descendants of Royal Lines" (Contributors: 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>, L. Orlandini, 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... 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.~ 1080 d.1136
- b.~ 1110 d.> 1153
- b.~ 1003 in Clermont, Oise, France d.> 1098
- b.~ 1030 in Clermont, Oise, France d.BET 1101 AND 1102
- b.1010 in Clermont, Oise, France
- b.> 1080
- b.~ 1010 in Montdidier, Somme, France d.1063
- b.~ 1045 in Montdidier, Somme, France d.> 1103
- b.~ 1014 in Roucy, Aisne, France d.BET 1062 AND 1063
- b.~ 1125
- b.~ 1110
- b.~ 1163 d.1248
- b.1060
- b.~ 1124
- b.~ 0955
- b. in Warenne, Normandy, France
- b.~ 0955 in Crepon, Normandy, France
- b.1044 in Bellencombe, Seine Inferieure, France d.24 Jun 1086 in Priory of Lewes, Sussex, England
- b.~ 0965 in Pont-Audemer, Normandy
- b.~ 1005 in Vascoeuil, Normandy, France d.1059
- b.~ 0965 in Crepon, Normandy, France
- b.<27 May 1085 in Sussex, England; Alternate POB given.
- b.~ 1003 in Normandy d.22 Jul 1035 in Nicea, Bithynia, Turkey
- b.14 Oct 1024 in Falaise, Normandy d.09 Sep 1087 in Hermenbraville, Rouen, Normandy
- b.~ 1003 in Falaise, Normandy
- b.~ 1044 in Normandy, France d.27 May 1085 in Castle Acre, Acre, Norfolk, England
- b.1012 in Flanders, France d.01 Sep 1067 in Lille, Duchy of Lower
- b.1026 in Flanders d.02 Nov 1083 in Caen, Normandy
- b.1009 in France d.08 Jan 1079 in Monastaere De L'order De St. Benoist, France
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They had a son named Dreux II De.