Antipope Callixtus III (or Callistus III) was Antipope from September 1168 to 29 August 1178. Antipope Felix V, the last historical Antipope. ... Events December 22 - Afraid that Old Cairo would be captured by the Crusaders, its Caliph orders the city set afire. ... August 29 is the 241st day of the year in the Gregorian Calendar (242nd in leap years), with 124 days remaining. ... Events June 18 - Five Canterbury monks see what was possibly the Giordano Bruno crater being formed The Sung Document written detailing the discovery of Mu-Lan-Pi (suggested by some to be California) by Muslim sailors The Chronicle of Gervase of Canterbury written The Leaning Tower of Pisa begins to...

His real name was Giovanni, Abbot of Stuma. He was a strong and early supporter of Frederick Barbarossa, and also supported Antipope Victor IV, who made him a cardinal. Frederick in a 13th century Chronicle Frederick I Hohenstaufen (1122 – June 10, 1190), also known as Frederick Barbarossa (Frederick Redbeard) was elected king of Germany on March 4, 1152 and was crowned Holy Roman Emperor on June 18, 1155. ... This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... A cardinal is a senior ecclesiastical official in the Roman Catholic Church, ranking just below the Pope and appointed by him as a member of the College of Cardinals during a consistory. ...

He was named successor to Antipope Paschal III by a small number of schismatic cardinals. Callixtus was primarily a bargaining chip of Frederick to pressure Alexander III, and he had only limited geographical support. He resided in Viterbo. Antipope Paschal III (or Paschal III) was Antipope from 1164 to September 20, 1168. ... The word schism, from the Greek σχισμα, schisma (from σχιζω, schizo, to split), means a division or a split, usually in an organization. ... Alexander III, né Orlando Bandinelli (c. ... Viterbo is a comune (township) in the Lazio region of central Italy, and the capital of Viterbo province, 42°25 12°06E, at 326 m (1070 ft) above sea-level. ...

Frederick, when it became politically expedient, after the defeat of Legnano, switched his backing to Alexander, in the 1177 Peace of Venice, abjuring his position on 29 August 1178. Callixtus eventually accepted the situation, submitting to Alexander in August 1178. After this he was named rector of Benevento, where he died a few years later. The Battle of Legnano, fought in 1176, marked the culmination of the futile attempts of Holy Roman Emperor Frederick I Barbarossa to dominate the Italian city states of Lombardia. ... Events November 25 - Baldwin IV of Jerusalem and Raynald of Chatillon defeat Saladin at the Battle of Montgisard. ... August 29 is the 241st day of the year in the Gregorian Calendar (242nd in leap years), with 124 days remaining. ... Events June 18 - Five Canterbury monks see what was possibly the Giordano Bruno crater being formed The Sung Document written detailing the discovery of Mu-Lan-Pi (suggested by some to be California) by Muslim sailors The Chronicle of Gervase of Canterbury written The Leaning Tower of Pisa begins to... Benevento is a town and archiepiscopal see of Campania, Italy, capital of the province of Benevento, 32 miles northeast of Naples. ...