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Male William De Brionne Click to view William De Brionne in the family tree

William was born about 0972 in Heismes (Hieme).1   William's father was Richard I Duke De Normandy and his mother was Connor De Crepon.  His paternal grandparents were Guillaume I Longue Épée and Sprota Adela De Senlis*; his maternal grandfather was Herbastus De Crêpon. He had four brothers and two sisters, named Richard, Godfrey Count Of Brienne, Mauger Count Of Mortain, Robert, Hawise Of and Emma Princess Of.  He was the fourth oldest of the seven children.  He died about 1054.1 


William's family with Alice Lesseline De Harcourt

They had two sons named Count Of Eu and Count of Eu.

1 Joanne's Tree.1 GED.GED
Further source/citation:
daveanthes.FTW

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