Agrippa Postumus

Marcus Agrippa Postumus, later named Agrippa Julius Caesar, was the youngest son of Marcus Vipsanius Agrippa and Julia the Elder, the daughter and only biological child of the Roman Emperor Augustus. Augustus initially considered Postumus as a potential successor and formally adopted him as his heir, but banished him from Rome in AD 6 on account of his ferocia. In effect, this action cancelled his adoption and virtually assured Tiberius' emplacement as Augustus' sole heir. Postumus was ultimately executed by his own guards shortly after Augustus' death in AD 14.