a supporter of James II of England or of the Stuarts after 1688
A Jacobite, sir, believes in the divine right of kings … A Jacobite believes in the divine right of bishops … Therefore, sir, a Jacobite is neither an atheist nor a deist. That cannot be said of a Whig; for Whiggism is the negation of all principle — Dr Johnson
Jacobitism noun
[from Latin Jacobus James]