Pope Honorius II, born Lamberto Scannabecchi, was head of the Catholic Church and ruler of the Papal States from 21 December 1124 to his death in 1130.
Pope Innocent II, born Gregorio Papareschi, was head of the Catholic Church and ruler of the Papal States from 14 February 1130 to his death in 1143. His election as pope was controversial and the first eight years of his reign were marked by a struggle for recognition against the supporters of Anacletus II. He reached an understanding with King Lothair III of Germany who supported him against Anacletus and whom he crowned as Holy Roman emperor. Innocent went on to preside over the Second Lateran council.
The 12th century is the period from 1101 to 1200 in accordance with the Julian calendar.
Lothair III, sometimes numbered Lothair II and also known as Lothair of Supplinburg, was Holy Roman Emperor from 1133 until his death. He was appointed Duke of Saxony in 1106 and elected King of Germany in 1125 before being crowned emperor in Rome. The son of the Saxon count Gebhard of Supplinburg, his reign was troubled by the constant intriguing of the Hohenstaufens, Duke Frederick II of Swabia and Duke Conrad of Franconia. He died while returning from a successful campaign against the Norman Kingdom of Sicily.
Pope Lucius II, born Gherardo Caccianemici dal Orso, was head of the Catholic Church and ruler of the Papal States from 9 March 1144 to his death in 1145. His pontificate was notable for the unrest in Rome associated with the Commune of Rome and its attempts to wrest control of the city from the papacy. He supported Empress Matilda's claim to England in the Anarchy, and had a tense relationship with King Roger II of Sicily.
Roger II was King of Sicily and Africa, son of Roger I of Sicily and successor to his brother Simon. He began his rule as Count of Sicily in 1105, became Duke of Apulia and Calabria in 1127, then King of Sicily in 1130 and King of Africa in 1148.
The Second Council of the Lateran was the tenth ecumenical council recognized by the Catholic Church. It was convened by Pope Innocent II in April 1139 and attended by close to a thousand clerics. Its immediate task was to neutralise the after-effects of the schism which had arisen after the death of Pope Honorius II in 1130 and the papal election that year that established Pietro Pierleoni as the antipope Anacletus II.
Anacletus II, born Pietro Pierleoni, was an antipope who ruled in opposition to Pope Innocent II from 1130 until his death in 1138. After the death of Pope Honorius II, the college of cardinals was divided over his successor. Unusually, the election was entrusted to eight cardinals, who elected Papareschi. A larger body of cardinals then elected Pierleoni, which led to a major schism in the Roman Catholic Church. Anacletus had the support of most Romans, including the Frangipani family, and Innocent was forced to flee to France. North of the Alps, Innocent gained the crucial support of the major religious orders, in particular Bernard of Clairvaux's Cistercians, the Abbot of Cluny Peter the Venerable; and Norbert of Xanten, the Archbishop of Magdeburg who established the Premonstratensians and held a high rank in the court of the German Emperor Lothar III.
The Kingdom of Sicily was a state that existed in the south of the Italian Peninsula and for a time the region of Ifriqiya from its founding by Roger II of Sicily in 1130 until 1816. It was a successor state of the County of Sicily, which had been founded in 1071 during the Norman conquest of the southern peninsula. The island was divided into three regions: Val di Mazara, Val Demone and Val di Noto.
Victor IV was an antipope for a short time, from March to 29 May 1138.
Alfonso, also called Anfuso or Anfusus (c. 1120 – 10 October 1144), was the Prince of Capua from 1135 and Duke of Naples from 1139. He was an Italian-born Norman of the noble Hauteville family. After 1130, when his father Roger became King of Sicily, he was the third in line to the throne; second in line after the death of an older brother in 1138. He was the first Hauteville prince of Capua after his father conquered the principality from the rival Norman Drengot family. He was also the first Norman duke of Naples after the duchy fell vacant on the death of the last Greek duke. He also expanded his family's power northwards, claiming lands also claimed by the Papacy, although he was technically a vassal of the Pope for his principality of Capua.
Ranulf II was the count of Alife and Caiazzo, and duke of Apulia. He was a member of the Italo-Norman Drengot family which dominated the Principality of Capua for most of the century between 1050 and 1150. Ranulf's wife, Matilda, was the sister of King Roger II of Sicily.
Robert of Selby was an Englishman, a courtier of Roger II and chancellor of the Kingdom of Sicily. It is likely that his name indicates that he was from Selby in Yorkshire. He probably journeyed to Sicily about 1130. In his train was Thomas Brun.
The Treaty of Mignano of 1139 was the treaty which ended more than a decade of constant war in the Italian Mezzogiorno following the union of the mainland duchy of Apulia and Calabria with the County of Sicily in 1127.
Cencius II or Cencio II Frangipane was the son of either of Cencio I or of John, a brother of one Leo. He was the principal representative of the Frangipani family of Rome in the early twelfth century.
Gilo of Toucy, also called Gilo of Paris or Gilo of Tusculum, was a French poet and cleric. A priest before he became a monk at Cluny, he was appointed cardinal-bishop of Tusculum sometime between 1121 and 1123. He served as a papal legate on four occasions: to Poland and Hungary around 1124, to Carinthia in 1126, to the Crusader states in 1128 or 1129 and to Aquitaine from 1131 until 1137. He took the side of the Antipope Anacletus II in the papal schism of 1130 and was deposed as cardinal-bishop by the Second Lateran Council in 1139.
The 1143 papal election followed the death of Pope Innocent II and resulted in the election of Pope Celestine II.
Desiderius was a Roman Catholic Cardinal, and Cardinal-priest of the titulus of S. Prassede in Rome.
The Council of Pisa, was convened by Pope Innocent II in May 1135. An extraordinary number of prelates, archbishops, bishops, monks, and abbots attended the council, including a large number of Italian clergy. The council addressed simony, schismatic clerics, heresy, as well as donations to the Templar Order. Pisa would be the third council Innocent would convene to address issues within the Catholic Church.