jacobite(n = noun.person) - a supporter of James II after he was overthrown or a supporter of the Stuarts;
is a kind of admirer, booster, champion, friend, protagonist, supporter

1.  A partisan or adherent of James the Second, after his abdication, or of his descendants, an opposer of the revolution in 1688 in favor of William and Mary. Macaulay. [1913 Webster]

2.  One of the sect of Syrian Monophysites. The sect is named after Jacob Baradæus, its leader in the sixth century. [1913 Webster]

   Of or pertaining to the Jacobites.

jacobite, n. hist. a supporter of James II of England after his removal from the throne in 1688, or of the Stuarts.

Derivative:
Jacobitical adj. Jacobitism n.

Etymology:
L Jacobus James: see JACOBEAN