Henry Benedict Maria Clement Thomas Francis Xavier Stuart ( 11 March 1725 - 13 July 1807 ) was a Roman Catholic Cardinal , as well as the fourth and final Jacobite heir to publicly claim the thrones of England , Scotland , and Ireland . Henry Benedict Stuart ( 11 March 1725 -- 13 July 1807 ) was a Roman Catholic Cardinal , as well as the fourth and final Jacobite heir to publicly claim the thrones of England , Scotland , and Ireland .