Григорий XII
Pope Gregory XII (; or 1327 – 18 October 1417), born Angelo Corraro, Corario, or Correr, was the Roman claimant to the headship of the Catholic Church from 30 November 1406 to 4 July 1415. Reigning during the Western Schism, he was opposed by the Avignon pope Benedict XIII and the Pisan popes Alexander V and John XXIII. Gregory XII was a very holy man who wanted the Church to be unified, and voluntarily abdicated in 1415 to end the Schism.