Walkelin de Derby Normon lord (1130–1190) Parents Sibyl de Braose William de Ferrers, 3rd Earl of Derby Margaret Ferrers, Countess of Derby Robert de Ferrers, 2nd Earl of Derby Children Robert de Ferrers, Lord of Eggington Siblings William de Ferrers, 4th Earl of Derby Petronell de Ferrers Agatha de Ferrers Millicent de Ferrers Partners Goda de Toni