 It is not known for certain when Marius wrote his work, apparently entitled "Caesares", but presumably towards the end of his career.It was intended as a continuation of the "Twelve Caesars" of Suetonius, and apparently covered the next twelve reigns, from Nerva to that of Elagabalus.As an eyewitness who experienced at least seven of these reigns from positions of authority, Maximus could have taken up the writing of history like his contemporary Dio Cassius, but he preferred the anecdotal and, indeed, frivolous forms of biography.