William Ferrers Younger son of William Ferrers, 5th Earl of Derby, landowner in Leicestershire, England (1240–1287) Parents William de Ferrers, 5th Earl of Derby Margaret de Quincy, Countess of Derby Children William Ferrers, 1st Lord Ferrers Anne de Ferrers Siblings Elizabeth Ferrers Robert de Ferrers, 6th Earl of Derby Joan de Ferrers Alianore de Ferrers Isabel Ferrers Agatha Ferrers Sibyl de Ferrers Agnes de Ferrers Maud Ferrers Joan de Ferrers Agnes Ferrers Partners Joan le Despencer Eleanor de Lovaine Anna Durward