Noun
conqueror of Gaul and master of Italy (100-44 BC)
Source: WordNetAs such, Augustus' adopted name would have been "Gaius Julius Caesar Octavianus". Source: Internet
Augustus (Imperator Caesar Divi Filius Augustus), as Caesar's adopted son and heir, discarded the family name of his natural father and initially renamed himself "Gaius Julius Caesar" after his adoptive father. Source: Internet
When Gaius Octavius from gens Octavia was adopted into the Julii Caesares family, his new name became Gaius Julius Caesar Octavianus. Source: Internet