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Male William Sheriff of Somerset de Fiennes Click to view William Sheriff of Somerset de Fiennes in the family tree

William Sheriff of Somerset was born about 1160 in Buckinghamshire,England.1   William Sheriff of Somerset's father was Ingelram de Fiennes and his mother was Sibyl de Boulogne.  His paternal grandparents were Eustace II de Fiennes and Anne de Dreux; his maternal grandparents were Pharamus de Boulogne "de Tingry" of Buckingham and Matilda (de Boulogne).  He was an only child.1 


William Sheriff of Somerset's family with Agnes de Dammartin

They had two sons and a daughter, named Baldwin, Sir Enguerran de Fiennes II and Mahaut.

1 Pullen010502.FTW
2 Pullen010502.FTW
Further sources/citations:
Ahnentafel for Margery Arundell, Royal Ancestors of Some American Families @ chart 11327, The Plantagenet Ancestry @ p 190, Ahnentafel for Margery Arundell, Royal Ancestors of Some American Families @ chart 11327, The Plantagenet Ancestry @ p 190

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