In 42 BC, Julius Caesar was formally deified as "the divine Julius" ("divus Iulius") after his assassination. His adopted son, Octavian (better known as Augustus, a title given to him 15 years later, in 27 BC) thus became known as "divi Iuli filius" (son of the divine Julius) or simply "divi filius" (son of the god). As a daring and unprecedented move, Augustus used this title to advance his political position in the Second Triumvirate, finally overcoming all rivals for power within the Roman state.