Antipope John XXIII
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Baldassarre Cossa was Pisan antipope John XXIII during the Western Schism. The Catholic Church regards him as an antipope, as he opposed Pope Gregory XII whom the Catholic Church recognizes as the rightful successor of Saint Peter. Wikipedia
Born: 1370
Died: December 22, 1419 (age 49 years), Florence, Italy
Place of burial: Tomb of Antipope John XXIII
Consecration: 25 May 1410; by Jean-Allarmet de Brogny
Created cardinal: 27 February 1402; by Pope Boniface IX
Elected: 17 May 1410
Successor: Roman claimant: Gregory XII; Antipapal claimant: Avignonian; Benedict XIII; Florentine; Felix V