*William de Percy
born about 1034 Perci-En-Auge, Normandy, France
died 1096 Mt. Joy, near Jerusalem, Holy Land
buried Mt. Joy, near Jerusalem, Holy Land

father:
*Geoffrey de Percy
born about 1005 Perci-En-Auge, Normandy, France

mother:
*Margaret wife of Geoffery de Percy
born about 1012
(end of information)

siblings:
Serlo de Percy born about 1033 Perci-En-Auge, Normandy, France buried Whitby Abbey, Yorkshire, England
Picot de Percy born about 1050 died after 1125 <Boulton Upon Dearne, Yorkshire, England>

spouse:
*Emma of Port
born about 1038 Alnwick, Northumberland, England
died after 1096
buried Whitby Abbey, Yorkshire, England
married about 1066 Semar, Yorkshire, England

children:
*Allan (Algernon) de Percy born about 1067 Alnwick, Northumberland, England
died before December 1135 buried Whitby, Yorkshire, England
Walter de Percy born about 1069 Whitby, Yorkshire, England
William de Percy born about 1071 Whitby, Yorkshire, England
Richard de Percy born about 1073 Whitby, Yorkshire, England
Geoffrey de Percy born about 1075 Whitby, Yorkshire, England

biographical and/or anecdotal:

notes or source:
LDS