[1] He is not the canonist Balius Severinus Deusdedit, appointed cardinal priest of the Roman titular church Apostolorum in Eudóxia (St. Peter in Chains) by Pope Gregory VII.
[2] Cardinal Deusdedit took part in the Papal election of Gelasius II,[3] which took place in the walled monastic compound, the Palladium (S. Maria in Pallara),[4] S. Maria in Pallara belonged to the Benedictine Congregation of Montecassino, and was the residence of Cardinal Giovanni of Gaeta (Joannes Gaetanus), the papal chancellor, who was also a Benedictine monk.
On 18 November, at Maguelonne, the pope appointed him a nuncio to Spain, to invite the Spanish bishops to a church council which was to be held in France at Clermont-Ferrand on 1 March 1119.
[12] Before Cardinal Deusdedit was able to return to the papal court, Pope Gelasius contracted pleurisy at Mâcon, where he had held a council, and died in the monastery of Cluny on 29 January 1119.
[13] He was not present, therefore, on 2 February, when the cardinals, and clergy, and lay leaders of Rome elected Archbishop Guy of Vienne, who took the name Calixtus II.
[14] Calixtus shared the guardianship of his nephew, the young Alfonso VII of Castile, with Diego Gelmírez and Queen Mother Uracca.
[15] Deusdedit rejoined the papal court by 18 June 1119,[16] when the pope was a St.-Gilles (S. Aegidius), on his way to Toulouse, where he held a church council on 8 July 1119.
[23] He continued efforts to reform the clergy, and to resolve questions left unsettled after the legation of Cardinal Boso of Sant'Anastasia.