Gassner, Johann Joseph, a noted “exorcist,” born at Bludenz, in the Tyrol; while a Catholic priest at Klösterle he gained a wide celebrity by professing to “cast out devils” and to work cures on the sick by means simply of prayer; he was deposed as an impostor, but the bishop of Ratisbon, who believed in his honesty, bestowed upon him the cure of Bendorf (1727‒1779).
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Gassendi, Pierre * Gataker, Thomas