 He was appointed Marshal (1542-44, 1546), Steward (1545-46) and Bencher (1547).In 1537, King Henry VIII granted Denys the Receivership of the former Order of Saint John, suppressed in England during the Dissolution of the Monasteries.This considerable preferment may have been due to his eldest brother, Sir Walter Denys, having married Margaret Weston, a daughter of Sir Richard Weston, of Sutton Place, Surrey, the elder brother of Sir William Weston, the last Prior of the Order before its dissolution.