Namesakes
Biblical Characters:
1 character
Augustus Caesar (a.k.a. Octavius) (m) Luke 2:1 
Roman and Byzantine Emperors:
1 emperor
Emperor Gaius Julius Caesar (a.k.a. Octavius) 27 BC-14
Saints:
1 saint
Saint Octavius ?-297
Shakespearian Characters:
1 character
Augustus Caesar; Octavius Caesar Antony and Cleopatra; Julius Caesar