The St. John Genealogy Project
Origin and Ancestry DNA Database & Electronic Archive
 MaleOsbern de Crepon, The Steward |
| Birth | abt. 970 | Crépy, Aisne, Picardie, France  |
| Death | 1040 | Pere, Haute-Pyrences, Midi-Pyrensees, France |
| Burial | ||
| Marriage | ||
| Father | Herfast de Crepon | F399605 Group Sheet | |
| Mother | ||
 FemaleEmma d'Ivry, de Crepon |
| Birth | 972 | |
| Death | 1034 | |
| Burial | ||
| Father | Rodulf d'Ivry, of Vaudreuil | F3447 Group Sheet | |
| Mother | Eremburge de Claville, d'Ivry | F3447 Group Sheet | |
| Male + William de Crepon, de Breteuil; Earl of Hereford |
| Birth | aft. 980 | Normandy, France |
| Death | 20 Feb 1071 | Flanders |
| Burial | ||
| Spouse | Adeliza de Toeni, (Tosny) | F400665 | |
| Marriage | ||
| Female + Jeanne de Crepon, d'Ivry d'Avranches; Alleged wife of Wimund I d'Avranches |
| Birth | abt. 1090 | |
| Death | ||
| Burial | ||
| Spouse | Wimund d'Avranches, I, Vicecomes at Mont-St.-Michel, Seigneur de Haye-Pesnel (Paynel) | F399613 | |
| Marriage | ||
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