Fe25 William de Ferrers

    William de Ferrers (Fe25), 4th Earl of Derby was the son of William (Walkeline) de Ferrers (Fe26) and Sibyl de Braose (1148? - 1228?)
    Born: about 1165
    Married:  Agnes de Meshines (Kevelioc) (Me25 
    Died: 1247
    and had issue:
    (Fe24) William de Ferrers , 5th Earl of Derby
    (Fe24-2) Bertha de Ferrers, married 1st Ralph le Bigod and had Sir John Bigod, 2nd Sir Thomas de Furnival and Sir Thomas de Furnival II and ? Sarah Furnival.
     
    Source:
    http://freepages.genealogy.rootsweb.com/~jamesdow/s056/f502261.htm