Pope Leo I

Pope Leo I, also known as Leo the Great, was pope from 440 to 461 AD. He is renowned for his significant contributions to the early Christian Church, particularly his strong stance on the nature of Christ, which helped define Christian orthodoxy. Leo is well-known for his diplomatic skills, notably in persuading Attila the Hun to spare Rome from invasion. His writings, especially the "Tome of Leo," were influential in the Council of Chalcedon (451 AD), which clarified Christ’s dual nature as both divine and human. Leo I is recognized as a Doctor of the Church and a key figure in Christian history.