Pope Gregory III (Latin: Gregorius III; died 28 November 741) was the bishop of Rome from 11 February 731 to his death. His pontificate, like that of his...

Pope Gregory IX (Latin: Gregorius IX; born Ugolino di Conti; 1145 – 22 August 1241) was head of the Catholic Church and the ruler of the Papal States from...

Pope Gregory II (715–731) Pope Gregory III (731–741) Pope Gregory IV (827–844) Pope Gregory V (996–999) Pope Gregory VI (1045–1046) Antipope Gregory VI...

Pope John V, Pope Sisinnius, Pope Constantine, and Pope Gregory III) 4 from Greece (Pope Anacletus, Pope Hyginus, Pope Eleutherius, and Pope Sixtus II)...

throne until July 1046, although Gregory VI continued to be recognized as the true pope. At the time, Sylvester III also reasserted his claim. A number...

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...

Otto III, who presented him as a candidate and arranged his election. Bruno was elected and succeeded John XV as pope, taking the name Gregory V. He...

Pope Gregory XV (Latin: Gregorius XV; Italian: Gregorio XV; 9 January 1554 – 8 July 1623), born Alessandro Ludovisi, was the head of the Catholic Church...

Papal States from 24 May 1086 to his death. He was the successor of Pope Gregory VII, yet his pontificate is far less notable than his time as Desiderius...

Pope Gregory XIV (Latin: Gregorius XIV; Italian: Gregorio XIV; 11 February 1535 – 16 October 1591), born Niccolò Sfondrato or Sfondrati, was head of the...