 In the series, Octavian is in Rome when Caesar is killed, and convinces his mother and Mark Antony not to flee the city; they hear the contents of Caesar's will soon after.In "Rome", Octavian is called Gaius Octavian and becomes known as Gaius Octavian Caesar after Caesar's death.The real Octavian was known as Gaius Octavius (he only becomes an "Octavianus" after being adopted and becoming a "Julius") and then became known as Gaius Julius Caesar (Octavianus/Octavian by his enemies, including Cicero, who continued to address him as Octavian in order to amuse himself and dent Octavian's ego, and later historians) after posthumously adopted by Caesar.