First Council of the Lateran

The Council of 1123 is reckoned in the series of Ecumenical councils by the Catholic Church. It was convoked by Pope Calixtus II in December, 1122, immediately after the Concordat of Worms. The Council sought to: (a) bring an end to the practice of the conferring of ecclesiastical benefices by people who were laymen; (b) free the election of bishops and abbots from secular influence; (c) clarify the separation of spiritual and temporal affairs; (d) re-establish the principle that spiritual authority resides solely in the Church; (e) abolish the claim of the emperors to influence papal elections.

The council convoked by Callistus II was significant in size: three hundred bishops and more than six hundred abbots assembled at Rome in March, 1123; Callistus presided in person. During the Council the decisions of the Concordat of Worms were read and ratified. Various other decisions were promulgated.

The First Lateran Council was called by Pope Callistus II whose reign began February 1, 1119. It demarcated the end of the Investiture controversy which had begun before the time of Pope Gregory VII. The issues had been contentious and had continued with unabated bitterness for almost a century. Guido, as he was called before his elevation to the papacy, was the son of William I, Count of Burgundy. He was closely connected with nearly all the royal houses of Europe on both sides of his family. He had been named the papal legate to France by Pope Paschal II. During Guido's tenure in this office, Paschal II yielded to the military threats of Henry V, Holy Roman Emperor, and was induced to issue the Privilegium in the year 1111. By this document the Church gave up much of what had been claimed and subsequently attained by Pope Gregory VII and his Gregorian Reforms.