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William de Ferrers, 3rd Earl of Derby was born on an unknown date to Robert de Ferrers, 2nd Earl of Derby (?-1162) and Margaret Peverel (c1144-?) and died before 21 October 1190 in (Siege of Acre) of unspecified causes.
|Offspring of Robert Ferrers and Margaret Peverel (c1144-?)|
|William de Ferrers, 3rd Earl of Derby (?-1190)||21 October 1190 (Siege of Acre)|| Sibylla de Braose (?-1227)|
|Walkelin de Ferrers (c1135-1190)|| |
|Maud de Ferrers (c1142-aft1175)||1142||1175|| Bertram III de Verdun (c1134-1192)|
- William Allen Shade 04:19, September 3, 2009 (UTC)