Members of this historical group patronize young choirboys in Ireland in the story of the abbess Rosalinda from the novel The Hearing Trumpet. The souls of members of this group await the Last Judgment along with a Nietzsche-esque Antichrist in a novel by Pierre Klossowski. A character in another novel notes that this group’s seal, which depicts two men riding the same horse, breeds speculation about their sexuality. A map belonging to this group places the (*) Omphalos at the center of the world’s “telluric currents.” A book by Colonel Ardenti proposes that this group had a plan for world domination, inspiring a mock theory called “The Plan” that is created on (-5[1])the (10[1])computer Abulafia by Diotallevi, Belbo, and a scholar of this group named Casaubon. For 10 points, a conspiracy involving what medieval order spurs the plot of Umberto Eco’s novel Foucault’s Pendulum? ■END■