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
The Historians' History of the World of the Western Roman Empire in 476. It discusses the rise of Christianity, the many emperors who held power in Rome during the founding and the fall of the Roman Empire, the division of the Roman Empire and the many barbarian invasions (Huns, Goths, Vandals) leading up to Rome's fall. "Part XI: The History of the Later Roman Empire" states that, along with over 75 additional authors, the work is based chiefly upon the following authorities: Agathias, Appian, Augustan History, J. B. Bury, Henry Fynes Clinton, George Kedrenos, Anna Komnene, Cassius Dio, Doukas (historian), Einhard, Eutropius (historian), George Finlay, Heinrich