Domitianus Caesar) (d. June 6 , 68 CE), the fifth Roman emperor from 54 CE to 68 CE.  Nero was born Lucius Domitius Ahenobarbus in Anzio – great-great-grandson of Augustus and step-brother to Britannicus . Ahenobarbus (Nero) was the son of Agrippina the Younger , fourth wife of Claudius Nero Germanicus,