William Ferrers, 3rd Lord Ferrers English nobleman (1333–1371) (1333–1371) Parents Isabel de Verdun, Lady Ferrers of Groby Henry Ferrers, 2nd Lord Ferrers of Groby Children Henry Ferrers, 4th Baron Ferrers of Groby Margaret de Ferrers, Countess of Warwick Siblings Elizabeth Ferrers Philippa de Ferrers Partners Margaret de Percy Margaret de Ufford, lady Ferrers