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Male William I de Ferrers , 3rd Earl of Derby Click to view William I de Ferrers , 3rd Earl of Derby in the family tree

William I de was born in 1140 in Ferrers, Derbyshire, England.  William I de's father was Robert de Ferrers , 2nd Earl of Derby and his mother was Margaret Peverel.  His paternal grandparents were Robert de Ferrers , 1st Earl of Derby and Hawise de Vitre; his maternal grandparents were William "The Younger" Peverel , of Nottingham and Avice de Lancaster.  He was an only child.  He died before October 21st, 1190 in Seige of Acre, Jerusalem, Palestine.


William I de's family with Sybil de Braose

‌William I de and Sybil de were married in a religious ceremony about 1167 in Sussex, England.  They had a son and three daughters, named William II de, Agatha de, Millicent de and Pernell (Petronella) de.

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