William , 5th Earl of Derby De Ferrers & Sibyl Marshall 
William , 5th Earl of Derby and Sibyl were married in a religious ceremony before May 14th, 1219. They had four daughters named Agnes, Isabel, Joan and Maud , Vicomtesse de Rochechouard.
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Personal Details
William , 5th Earl of Derby De Ferrers
William , 5th Earl of Derby was born about 1200 in Ferrers,Derbyshire,ENGLAND.1 He died on March 28th, 1254 in Evington,ENGLAND; buried: Merevale Abbey,Merevale,Warwick, ENGLAND.1
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Children
Maud , Vicomtesse de Rochechouard De Ferrers
Maud , Vicomtesse de Rochechouard was born in 1230 in Kyme,ENGLAND.