Emperor Augustus (* 63 BC; † 14 AD), born as Gaius Octavius . After the adoption by Julius Caesar be formally was Roman name Julius Caesar Octavianus , he has never performed in this form. In modern history he is still referred to as Octavian or Octavian for the time up to the award of the title Augustus .
Pope John XII (937 / 939–964), (originally Octavian of Spoleto )
Antipope Viktor IV (1095–1164), (originally Octaviano de Montecello )