Melvyn Bragg and guests discuss the life, reputation and impact of Constantine I, known as Constantine the Great (c280s -337AD). Born in modern day Serbia and proclaimed Emperor by his army in York in 306AD, Constantine became the first Roman Emperor to profess Christianity. He legalised Christianity and its followers achieved privileges that became lost to traditional religions, leading to the steady Christianisation of the Empire. He built a new palace in Byzantium, renaming it Constantinople, as part of the decentralisation of the Empire, an Eastern shift that saw Roman power endure another thousand years there, long after the collapse of the empire in the West. With Christopher Kelly Professor of Classics and Ancient History at the University of Cambridge and President of Corpus Christi College Lucy Grig Senior Lecturer in Roman History at the University of Edinburgh and Greg Woolf Director of the Institute of Classical Studies, University of London Producer: Simon Tillotson.