Tiberius Julius Caesar Augustus[b] (/taɪˈbɪəriəs/ ty-BEER-ee-əs; 16 November 42 BC – 16 March AD 37) was Roman emperor from AD 14 until 37. He succeeded his stepfather Augustus, the first Roman emperor. Tiberius was born in Rome in 42 BC to politician Tiberius Claudius Nero and his wife, Livia Drusilla. In 38 BC, Livia divorced Nero and married Augustus. Following the untimely deaths of Augustus's two grandsons and adopted heirs, Gaius and Lucius Caesar, Tiberius was designated Augustus's successor. Prior to this, Tiberius had proved himself an able diplomat and one of the most successful Roman generals. His conquests of Pannonia, Dalmatia, Raetia, and (temporarily) parts of Germania laid the foundations for the empire's northern frontier.
 
Tiberius died in Misenum on 16 March AD 37, months before his 78th birthday.[92] While ancient sources agree on the date and location of his death, contradictory accounts exist of the precise circumstances.