And by the way, Augustus wasn't his name either - Augustus means 'revered', and was a name given to him by the Senate. His name was Octavius, or something near. But you probably know that, considering that you seem to know the rest of his name and all.
Thanks for the acknowledgement, although I only know of this now because my latin teacher told us all about it on wednesday, or some day last week, because she gave us a worksheet that said "C. Julius" (C's used instead of G for names since they didn't start off with Gs, I think, and the initial stands for the first name, for those who don't know).
And Octavius was his father's name (does anyone know if this is where Dr. Octavian in Spiderman came from?) though I can't remeber his first name.
I know that most people say "Jupiter" with a J sound when referring to the planet, and Iupiter when referring to the Roman god, so are you supposed to say Ianus when referring to the god? If you are, I wish I knew that before I read Castle in the Attic so I wouldn't constantly think it's a J sound.