An antipope is a person who claims to be Bishop of Rome and leader of the Roman Catholic Church in opposition to the legitimately elected pope. Between the 3rd and mid-15th centuries, antipopes were supported by factions within the Church itself and secular rulers.
Baldassarre Cossa was Pisan antipope John XXIII (1410–1415) 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. He was also an opponent of Antipope Benedict XIII, who was recognized by the French clergy and monarchy as the legitimate Pontiff.
The Council of Constance was an ecumenical council of the Catholic Church that was held from 1414 to 1418 in the Bishopric of Constance (Konstanz) in present-day Germany. The council ended the Western Schism by deposing or accepting the resignation of the remaining papal claimants and by electing Pope Martin V. It was the last papal election to take place outside of Italy.
The pope is the bishop of Rome and the visible head of the worldwide Catholic Church. He is also known as the supreme pontiff, Roman pontiff or sovereign pontiff. Since the eighth century, the pope is the head of state or sovereign of the Papal States and later the much smaller Vatican City State. The current pope is Francis, who was elected on 13 March 2013.
Pope Gregory XII, born Angelo Corraro, Corario, or Correr, was head of the Catholic Church from 30 November 1406 to 4 July 1415. Reigning during the Western Schism, he was opposed by the Avignon claimant Benedict XIII and the Pisan claimants Alexander V and John XXIII. Gregory XII wanted to unify the Church and voluntarily resigned in 1415 to end the schism.
The Avignon Papacy was the period from 1309 to 1376 during which seven successive popes resided in Avignon rather than in Rome. The situation arose from the conflict between the papacy and the French crown, culminating in the death of Pope Boniface VIII after his arrest and maltreatment by Philip IV of France. Following the subsequent death of Pope Benedict XI, Philip forced a deadlocked conclave to elect the French Clement V as pope in 1305. Clement refused to move to Rome, and in 1309 he moved his court to the papal enclave at Avignon, where it remained for the next 67 years. This absence from Rome is sometimes referred to as the "Babylonian captivity” of the Papacy.
Pope Nicholas II, otherwise known as Gerard of Burgundy, was the head of the Catholic Church and ruler of the Papal States from 24 January 1059 until his death in 27 July 1061. At the time of his election, he was bishop of Florence. During his Papacy, Nicholas II successfully expanded the influence of the papacy in Milan and southern Italy. He was also responsible for passing papal election reforms.
The College of Cardinals, more formally called the Sacred College of Cardinals, is the body of all cardinals of the Catholic Church. As of 5 August 2024, there are 236 cardinals, of whom 124 are eligible to vote in a conclave to elect a new pope. Cardinals are appointed by the pope for life but eligibility to vote ceases at the age of 80.
The Western Schism, also known as the Papal Schism, the Great Occidental Schism, the Schism of 1378, or the Great Schism, was a split within the Roman Catholic Church lasting from 20 September 1378 to 11 November 1417, in which bishops residing in Rome and Avignon simultaneously claimed to be the true pope, and were eventually joined by a third line of Pisan claimants in 1409. The event was driven by international rivalries, personalities and political allegiances, with the Avignon Papacy in particular being closely tied to the French monarchy.
A papal conclave is a gathering of the College of Cardinals convened to elect a bishop of Rome, also known as the pope. Catholics consider the pope to be the apostolic successor of Saint Peter and the earthly head of the Catholic Church.
A papal renunciation also called a papal abdication, occurs when the current pope of the Catholic Church voluntarily resigns his position. As a pope's time in office has conventionally lasted from his election until his death, a papal renunciation is an uncommon event. Before the 21st century, only five popes unambiguously resigned with historical certainty, all between the 10th and 15th centuries. Additionally, there are disputed claims of four popes having resigned, dating from the 3rd to the 11th centuries; a fifth disputed case may have involved an antipope.
Pedro Martínez de Luna y Pérez de Gotor, known as el Papa Luna(lit. 'the Moon Pope') or Pope Luna, was an Aragonese nobleman who was christened antipope Benedict XIII during the Western Schism.
Sedeprivationism is a doctrinal position within Traditionalist Catholicism which holds that the current occupant of the Holy See is a duly-elected pope, but lacks the authority and ability to teach or to govern unless he recants the changes brought by the Second Vatican Council. The doctrine asserts that since this council, occupants of the See of Peter are popes materialiter sed non formaliter, that is "materially but not formally". As such, sedeprivationists teach that Pope John XXIII, Pope Paul VI, Pope John Paul I, Pope John Paul II, Pope Benedict XVI, and Pope Francis have not attained fullness of the papacy.
According to Roman Catholicism, the history of the papacy, the office held by the pope as head of the Catholic Church, spans from the time of Peter to the present day.
The Catholic Church in Africa is part of the worldwide Catholic Church in full communion with the Holy See in Rome.
Conclavism is the practice that has existed since the second half of the 20th century which consists in the convening of a conclave to elect rival popes (antipopes) to the current pope of Rome. This method is used by some Catholics, often Sedevacantists, who do not accept the legitimacy of their present papacy. Those who hold the position that a conclave can be convened to elect a pope to rival the current pope of Rome are called conclavists.
The selection of the Pope, the Bishop of Rome and Supreme Pontiff of the Catholic Church, prior to the promulgation of In Nomine Domini in AD 1059 varied throughout history. Popes were often putatively appointed by their predecessors or by political rulers. While some kind of election often characterized the procedure, an election that included meaningful participation of the laity was rare, especially as the Popes' claims to temporal power solidified into the Papal States. The practice of papal appointment during this period would later result in the putative jus exclusivae, i.e., the claimed but invalid right to veto the selection that Catholic monarchs exercised into the twentieth century.
Most Holy Family Monastery is a sedevacantist organization, based in Fillmore, New York. It is headed by two siblings, Michael and Peter Dimond.
Peter of Candia, also known as Peter Phillarges, named as Alexander V, was an antipope elected by the Council of Pisa during the Western Schism (1378–1417). He reigned briefly from 26 June 1409 to his death in 1410, in opposition to the Roman pope Gregory XII and the Avignon antipope Benedict XIII. In the 20th century, the Catholic Church reinterpreted the Western Schism by recognising the Roman popes as legitimate. Gregory XII's reign was extended to 1415, and Alexander V is now regarded as an antipope.
