Divi filius


Divi filius is a Latin phrase meaning "divine son", and was a title much used by the Emperor Augustus, the grand-nephew and adopted son of Julius Caesar.

Octavian

On 1 January 42 BC, nearly two years after the assassination of Julius Caesar on 15 March 44 BC, but before the final victory of the Second Triumvirate over the conspirators who had taken his life, the Roman Senate recognised Caesar as a divinity. He was therefore referred to as Divus Iulius, and his adopted son Octavian styled himself Divi filius. The fuller form, divi Iuli filius, was also used.
Octavian used the title divi filius to advance his political position, finally overcoming all rivals for power within the Roman state. The title was for him "a useful propaganda tool", and was displayed on the coins that he issued.

Other emperors

Since Augustus himself and some other Roman Emperors were deified after death, the title Divi Filius was also applied to some of Augustus' successors, notably Tiberius, Nero, and Domitian.