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Male [Earl Of Essex] William De Mandeville [Earl Of Essex] Click to view [Earl Of Essex] William De Mandeville [Earl Of Essex] in the family tree

William De was born about 1126 in Of, Great Waltham, Essex, England.  William De's father was Geoffrey De Mandeville and his mother was [Countess Of Ess Rohese De Vere [Countess Of Ess.  His maternal grandparents were (Sheriff &  Chambertain) Aubrey Alberic "The Monk"  De Vere (Sheriff &  Chambertain) and Mrs. Beatrice (Beatrix) (Nmn-Mrs. De) Vere. He had three brothers and two sisters, named Ernulf De, Robert De, Geoffrey De, Maud De and Alice De.  He was the second oldest of the six children. He had a half-brother and two half-sisters, named Simon II De, Beatrice De and Andeline De.  He died in England.

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