 Spanish monarchs Ferdinand and Isabella requested a papal bull establishing an inquisition in Spain in 1478.Pope Sixtus IV granted a bull permitting the monarchs to select and appoint two or three priests over forty years of age to act as inquisitors.In 1483, Ferdinand and Isabella established a state council to administer the inquisition with the Dominican Friar Tomás de Torquemada acting as its president, even though Sixtus IV protested the activities of the inquisition in Aragon and its treatment of the "conversos".