Part II. Attila the Hun (c.403? - 453 AD) He was brought up as a barbarian hostage at the court of the emperor Honorius. Attila knew the Roman world. On several occasions he assaulted the Roman Empire. In 451, Flavius Aetius defeated Attila and the Huns at the Battle of Chalons. In 453 Attila died from a burst blood vessel; the Hun Empire collapsed.