Abbot of Saint Mark's near Spoleto
Eleutherius presided over the monastery of Saint Mark near Spoleto, in central Italy, during the sixth century. The best-known incident from his abbacy, related by Gregory the Great, concerns a child who had been delivered from demonic possession while being raised in the monastery. The abbot remarked that, since the boy now lived among the servants of God, the devil would not dare approach him. By tradition these words savored of presumption, and the demon at once returned and tormented the child anew. Eleutherius, acknowledging his fault, joined his whole community in fasting and prayer until the child was freed once more.
His monks also reported that by his tears he had raised a dead person to life. Gregory cites Eleutherius elsewhere in the Dialogues as a trustworthy witness to the lives of other holy men of the region, describing him as the 'old father Eleutherius' and a man familiarly acquainted with the holy Isaac.