The St. John Genealogy Project
Origin and Ancestry DNA Database & Electronic Archive
 MaleWilliam son of Wimund d'Avranches |
| Birth | abt. 1011 | Normandy, France  |
| Death | abt. 1087 | |
| Burial | ||
| Marriage | ||
| Other Spouse | Mathilda / Emma de Meules, de Redvers de Oakhampton; daughter of Baldwin | F399553 | |
| Marriage | ||
| Father | Wimund d'Avranches, I, Vicecomes at Mont-St.-Michel, Seigneur de Haye-Pesnel (Paynel) | F399613 Group Sheet | |
| Mother | Jeanne de Crepon, d'Ivry d'Avranches; Alleged wife of Wimund I d'Avranches | F399613 Group Sheet | |
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