Leo the Great (Leo I) (440-61)
Importance
• Now known as the “pioneer pope”
• Believed in a hierarchical church with everything converging on Rome
• Believed in papal supremacy
• Held to idea of plenitudo potestatis (plentitude of power) for the See of Peter where the pope as heir of Peter, ruled over the whole church
• His teachings on the nature of Christ were adopted as orthodoxy at the Council of Chalcedon (451)
• Persuaded Attila the Hun to stop a raid on Rome
