deaths
Antipope John XXIII
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Antipope John XXIII
Italian bishop and Pisan antipope (1410–1415)
Baldassarre Cossa was Pisan antipope as John XXIII (1410–1415) during the Western Schism. The Catholic Church today regards him as an antipope in opposition to Pope Gregory XII, whom it recognizes as the rightful successor of Saint Peter. John XXIII was also an opponent of…Source: Wikipedia (CC BY-SA)