Natalius was a figure in early church history who is sometimes considered to be the first antipope of his birthplace of Rome. The only information about...

writer the story of Natalius, a 3rd-century priest who accepted the bishopric of the Adoptionists, a heretical group in Rome. Natalius soon repented and...

Antipope Philip (fl. 8th century) was an antipope who held office for just one day, on 31 July 768. In 768, Philip was a priest serving in the monastery...

Antipope Eulalius (died 423) was antipope from December 418 to April 419. Elected in a dual election with Pope Boniface I, he eventually lost out to Boniface...

Moon Pope') or Pope Luna, was an Aragonese nobleman who was christened antipope Benedict XIII during the Western Schism. Pedro Martínez de Luna was born...

Antipope John VIII or Antipope John was an antipope of the Roman Catholic church, in the year 844. On the death of Pope Gregory IV (25 January 844), the...

the death of Pope Conon (21 September 687), and thus is considered an antipope of the Roman Catholic Church. Prior to the disputed election, Theodore...

Antipope Paschal III (or Paschal III) (c. 1110 – 20 September 1168) was a 12th-century clergyman who, from 1164 to 1168, was the second antipope to challenge...

Gregory VIII (died 1137), born Mauritius Burdinus (Maurice Bourdin), was antipope from 10 March 1118 until 22 April 1121. He was born in the Limousin, part...

between 1180 and 1184) was an antipope from September 1168 until his resignation in August 1178. He was the third antipope elected in opposition to Pope...

the death of Pope Conon (21 September 687), and thus is considered an antipope of the Roman Catholic church. Prior to the disputed election, Paschal was...

Theodoric was an antipope in 1100 and 1101, in the schism that began with Wibert of Ravenna in 1080, in opposition to the excesses of Pope Gregory VII...

He ruled in Rome for several months in 366–367, was afterwards declared antipope, and died after 381. In 355, Emperor Constantius II, who was sympathetic...

Antipope Boniface VII (died 20 July 985), otherwise known as Franco Ferrucci, was a Catholic prelate who claimed the Holy See in 974 and from 984 until...

minor antipopes of the 15th century. The first, Bernard Garnier became antipope in 1424 and died c. 1429. The second, Jean Carrier, became antipope c. 1430...

in 310, opposed the election of Pope Eusebius, earning him the title of antipope. All that is known of Heraclius appears in an epitaph written by Pope Damasus...

Innocent III (born Lando Di Sezze) was an antipope from 29 September 1179 to January 1180. Innocent III was born in Sezze in the Papal States and died...

Antipope Felix II, an archdeacon of Rome, was installed as Pope in 355 AD after the Emperor Constantius II banished the reigning Pope, Liberius, for refusing...

roster of popes, the Annuario Pontificio. As such, he is now considered an antipope by the Catholic Church. Little is known about the life of Christopher;...

Victor IV (died after April 1139) was an antipope for a short time, from March to 29 May 1138. Possibly he was born in Ceccano, as Gregorio dei Conti di...

publication now in the public domain: Mann, Horace Kinder (1907). "Gregory VI (Antipope)". In Herbermann, Charles (ed.). Catholic Encyclopedia. Vol. 1. New York:...

allowing Boniface to be consecrated pope and Dioscorus to be branded an antipope. Originally a deacon of the Church of Alexandria, Dioscorus was forced...

He fled Rome on 24 January 1059 and is today generally regarded as an antipope. He was a son of Guido, Lord of Poli who was the youngest son of Alberic...

Clément VII) by the cardinals who opposed Pope Urban VI and was the first antipope residing in Avignon, France. His election led to the Western Schism. The...

Anacletus II (died January 25, 1138), born Pietro Pierleoni, was an antipope who ruled in opposition to Pope Innocent II from 1130 until his death in 1138...

Henry IV, who later forced him to abdicate. Today he is regarded as an antipope. Before his election as pope, Maginulf was the archpriest of Sant'Angelo...

II (c. 1010 – 1072), born Pietro Cadalo (Latin Petrus Cadalus), was an antipope from 1061 to 1072. He was born in the County of Verona, and became bishop...

25-28; 26:7-8,10,14-15,22-23,31-33 200? Sextus Julius Africanus 200? Antipope Natalius, rival bishop of Rome, according to Eusebius's EH5.28.8-12, quoting...

Ottaviani di Monticelli) (1095 – 20 April 1164) was elected as a Ghibelline antipope in 1159, following the death of Pope Adrian IV and the election of Alexander...

Laurentius (possibly Caelius) was the Archpriest of Santa Prassede and later antipope of the See of Rome. Elected in 498 at the Basilica Saint Mariae (presumably...