I found another website regarding the Jacobites:

Royal Stuart Society
We are a monarchist and traditionalist organisation whose basis is defined in our objectives which are:

  • to be open to all who have an interest in the members of the Royal House of Stuart, their descendants and supporters
  • to promote research in and further knowledge of Stuart history
  • to uphold rightful Monarchy and oppose republicanism
  • to arrange such commemorations, lectures and other activities as shall advance these objects.

Ah-ha. The House of Stuart- which I'm somewhat familiar with. Catherine of Braganza, who has a thread here in the English section, was married to Charles II.