Anastasius of Suppentonia was a 6th-century Benedictine monk who served as the abbot of Suppentonia, located in what is now Castel Sant'Elia. His life and death are primarily documented by Gregory the Great, who recorded a significant event involving a divine visitation. According to these historical accounts, an angel appeared to the abbot and his community, leading to a sudden and collective end for the entire group of monks.