Antipope John XXIII
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Baldassarre Cossa was Pisan antipope as John XXIII 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
Miniature from the Chronicle of the Council of Constance by Ulrich of Richenthal
Tomb of Antipope John XXIII
Pope John XXIII
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Pope John XXIII was head of the Catholic Church and sovereign of Vatican City from 28 October 1958 until his death on 3 June 1963.
Antipope John XXIII
…the Annuario Pontificio recognized John XXIII the legitimate successor of Saint Peter. However, the Western Schism was reinterpreted in 1958 when Pope John XXIII chose to reuse the ordinal XXIII, which is now reflected in modern editions of the Annuario Pontificio. John XXIII is now considered to be an antipope…
John XXIII, c. 1958–63
Pope John XXIII, 1958–1963
Roncalli's family, c. 1890
The young priest Roncalli