Compare: Dunlop, Robert (1897). "Skeffington, William" . Dictionary of National Biography. Vol. 52. pp. 323–325. ; page 325; third para from end: - "[William] Skeffington married, first, Margaret, daughter of Sir Everard Digby of Drystoke, by whom he had a son Thomas, his heir, who married Margaret, daughter and heiress of Edmund Stanhope of West Markham, Nottinghamshire; and, secondly, Ann, daughter of Sir John Digby of Kettleby in Leicestershire, by whom he had apparently a son Leonard, 'sometime lieutenant of the Tower,' and the inventor of an instrument of torture, known as 'Skevington's irons' or 'Skevington's daughter,' by which the body of the victim was completely doubled up until the head and feet were drawn together, the invention of which has been erroneously ascribed to his father, Sir William."