The Last Legion from the publication of British historian Edward Gibbon's History of the Decline and Fall of the Roman Empire in the late 18th Century. At the time of his proclamation as Emperor, Romulus Augustus was 16, older than portrayed in the film. Upon being captured by Odoacer, the boy usurper was seen to be a victim of his father. He was spared and sent to live in comfortable retirement in southern Italy. There was a struggle for control of the Eastern Roman Empire at the time but the Emperor alluded to would probably have been Zeno (explicit in the novel). In
Historiography of the fall of the Western Roman Empire to the fall of the West Roman Empire (395-476), in his book "The Fall of the West: The Slow Death of the Roman Superpower" (2009). William H. McNeill, a world historian, noted in chapter three of his book "Plagues and Peoples" (1976) that the Roman Empire suffered the severe and protracted Antonine Plague starting around 165 AD. For about twenty years, waves of one or more diseases, possibly the first epidemics of smallpox and measles, swept through the Empire, ultimately killing about half the population. Similar epidemics, such as the Plague of Cyprian, also occurred in the 3rd century. McNeill