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Male William , 4th Earl Of Derby De Ferrers Click to view William , 4th Earl Of Derby De Ferrers in the family tree

William , 4th Earl Of Derby was born about 1162 in Derbyshire,ENGLAND.1   William , 4th Earl Of Derby's father was William , 3rd Earl Of Derby De Ferrers and his mother was Sybil De Braose.  His paternal grandparents were Robert , 2nd Earl Derby De Ferrers and Margaret , Countess Of Derby Peveril; his maternal grandparents were William ,Sheriff Hereford Baron Gwentla De Braose and Bertha De Hereford. He had two sisters named Agnes and Millicent.  He was the oldest of the three children.  He died on September 22nd, 1247.1 


William , 4th Earl Of Derby's family with Agnes , Lady of Chartley De Meschines

‌William , 4th Earl Of Derby and Agnes , Lady of Chartley were married in a religious ceremony.1   They had a son and a daughter, named William , 5th Earl of Derby and Sybil.

1 Brøderbund WFT Vol. 1, Ed. 1, Tree #1142, Date of Import: Apr 27, 1996
Further sources/citations:
GEDCOM File : 46438.ged, GEDCOM File : rowland2.ged