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Tiberius Caesar Augustus, born Tiberius Claudius Nero (November 16, 42 BC – March 16, AD 37), was the second Roman Emperor, from the death of Augustus in AD 14 until his own death in 37. Tiberius was by birth a Claudian, son of Tiberius Claudius Nero and Livia Drusilla. His mother divorced his father and was remarried to Octavian Augustus in 39 BC. Tiberius would later marry Augustus' daughter Julia the Elder (from an earlier marriage) and even later be adopted by Augustus and by this act he became a Julian. The subsequent emperors after Tiberius would continue this blended dynasty of both families for the next forty years; historians have named it the Julio-Claudian dynasty.
Tiberius Claudius Nero is recognized as one of Rome's greatest generals, whose campaigns in Pannonia, Illyricum, Rhaetia and Germania laid the foundations for the northern frontier.