Gaius Suetonius Tranquillus (c70-c140), also known as Suetonius, was a prominent Roman historian and biographer. He is mainly remembered as the author of De Vita Caesarum (Lives of the Caesars, best known in English as The Twelve Caesars), his only extant work. The Twelve Caesars, probably written in Hadrian's time, is a collective biography of the Roman Empire's first leaders who were: Julius Caesar, Augustus, Tiberius, Caligula, Claudius, Nero,...