page_title: Antipope John XXIII
section_title: Death and burial
hierarchical_section_title: Antipope John XXIII / Death and burial
context_page_description: 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 now recognizes as the rightful successor of Saint Peter.
  Cossa was born in the Kingdom of Naples. In 1403, he served as a papal legate in Romagna. He participated in the Council of Pisa in 1408, which sought to end the Western Schism with the election of a third alternative pope. In 1410, he succeeded Antipope Alexander V, taking the name John XXIII. At the instigation of Sigismund, King of the Romans, Pope John called the Council of Constance of 1413, which deposed John XXIII and Benedict XIII, accepted Gregory XII's resignation, and elected Pope Martin V to replace them, thus ending the schism. John XXIII was tried for various crimes, though later accounts question the veracity of those accusations.
context_section_description: Cossa was again imprisoned in Germany. He was freed in 1418 after a heavy ransom was paid by the Medici. He went to Florence, where he submitted to Martin V, who made him Cardinal Bishop of Frascati. Cossa died only a few months later.
  The Medici oversaw the construction of his magnificent tomb by Donatello and Michelozzo in the Battistero di San Giovanni in Florence. Pope Martin V protested in vain against the inscription on the sarcophagus: "John the former pope".
  J.P. Kirsch remarks that "Undeniably secular and ambitious, his moral life was not above reproach, and his unscrupulous methods in no wise accorded with the requirements of his high office ... the heinous crimes of which his opponents in the council accused him were certainly gravely exaggerated." One historian concluded that John was "a great man in temporal things, but a complete failure and worthless in spiritual things".
caption: Tomb of Antipope John XXIII.
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