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...

Gregory VI Pope Gregory VII (1073–1085), after whom the Gregorian Reform is named Pope Gregory VIII (1187) Antipope Gregory VIII Pope Gregory IX (1227–1241)...

which antipope, as in the case of Pope Leo VIII and Pope Benedict V. Hippolytus of Rome (d. 235) is commonly considered to be the earliest antipope, as...

Antipope Clement VIII should not be confused with Pope Clement VIII. Clement VIII, born Gil Sánchez Muñoz y Carbón (1369/70 – 28 December 1445/46), was...

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

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...

Braga, as his own pope, who assumed the name Gregory VIII but came to be known as Antipope Gregory VIII. Burdinus had already been deposed and excommunicated...

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...

Pope Gregory VIII (Latin: Gregorius VIII; c. 1100/1105 – 17 December 1187), born Alberto di Morra, was head of the Catholic Church and ruler of the Papal...

ensure the Avignon line. Three of these cardinals met and elected Antipope Clement VIII. However, one of Benedict XIII's cardinals, Jean Carrier, disputed...