Pope Sylvester I (314-335) became an important figure in the political history of early medieval Italy. His legendary relationship with Constantine I (306-337), the first Christian emperor, played a significant role in establishing his ideological prominence. Declared a saint of the early Roman Church, Sylvester’s relics did not gain much attention until the middle of the eighth century, when they became a source of competition. On the one hand, Roman popes venerated his body in the monastery of St Stephen and St Sylvester, founded by Pope Paul I around 760 inside the Eternal City; on the other hand, the Lombard king Aistulf and his brother-in-law, Abbot Anselm, claimed to have brought Sylvester’s relics north, in order to have them buried ...