ALL SAINTS CELEBRATED IN DECEMBER Saints celebrated on the 12th of December WELCOME! SAINT CALLISTUS II., POPE ⬅️ Saintly Popes - Index Saint Callistus' [Callixtus] date of birth is unknown; he died on December 13, 1124. His reign, beginning February 1, 1119, is signalised by the termination of the Investiture controversy which, begun in the time of Gregory VII, had raged with almost unabated bitterness during the last quarter of the eleventh century and the opening years of the twelfth. Guido, as he was called before his elevation to the papacy, was the son of Count William of Burgundy, and both by his father’s and mother’s side was closely connected with nearly all the royal houses of Europe. His brother Hugh had been appointed Archbishop of Besancon, and he himself was named Archbishop of Vienne (1088), and afterwards appointed papal legate in France by Paschal II. AN ASSEMBLY OF THE BISHOPS During Guido’s tenure in this office, Paschal II, yielding to the threats of Hen...