Joseph-Antoine Boullan
Abbé Joseph-Antoine Boullan (Saint-Porquier, Tarn-et-Garonne, 18 February 1824 – 4 January 1893, Lyon) was a French Roman Catholic priest who was later laicized, and was often accused of being a Satanist although he continued to defend his status as a Christian. He was a friend and inspiration of the writer Joris-Karl Huysmans. Huysmans with Henri Antoine Jules-Bois supported Boullan in a celebrated occultist feud with the Marquis Stanislas de Guaita. Boullan is mentioned in "The Prague Cemetery", the novel by Umberto Eco.