Lord Arran died at his lodgings at Whitehall on 17 December 1758 and was buried in St. Margaret's Church, Westminster. On his death, the Earldom of Arran, the Barony of Butler (of Weston), and the Jacobite Dukedom of Arran (such as it was) became extinct, along with the Dukedom and Marquessate of Ormonde. The rest of his "de jure" Irish titles, including the Earldom of Ormonde, passed to his kinsman John Butler ("de jure" 15th Earl), but remained dormant. Arran's considerable estate was inherited by his unmarried sister Amelia and on her death in 1760 to also to John Butler.