Page "Act of Settlement 1701" Paragraph 16

In addition to James II himself ( who died a few months after the act received the royal assent ) and his Catholic children Prince James and Princess Louisa, the act also excluded the descendents of James ' sister Henrietta, the youngest daughter of Charles I. Henrietta's daughter Anne was then the Queen of Sardinia and a Catholic ; the Jacobite heirs of today are descended from her line.