Perkinite
/ˈpəːkɪnʌɪt/noun
A sympathizer with Sir William Perkins, executed in 1696 for his part in a plot to murder William III; (more generally) a Jacobite. Now historical and rare.
Origin
Early 18th century; earliest use found in untitled. From Perkin- (in the name of Sir William Perkins or Parkyns, English lawyer and Jacobite conspirator) + -ite.