Augustus
Augustus (; 23 September 63 BC – 19 August AD 14) was a Roman statesman and military leader who was the first Emperor of the Roman Empire, controlling Imperial Rome from 27 BC until his death in AD 14. His status as the founder of the Roman Principate has consolidated an enduring legacy as one of the most effective and controversial leaders in human history.
Cottius
The Roman alliance was established in 13 or 12 BC, and is attested in an inscription in the Arch of Susa, which was erected to commemorate this agreement between 9 and 8 AD. Augustus attended its unveiling. By it Cottius became a client king of Rome, with his authority was reduced in exchange of the retention of his autonomy. While deferring authority to Augustus, he continued to hold his hereditary position in his land. Millar called such an arrangement as a dual sovereignty. Cottius became a Roman citizen, Latinising his name as Marcus Julius Cottius, and was appointed "præfectus civitatium". Areas assigned to this type of prefect were areas newly brought under Roman administration in the Augustan period. These officials oversaw areas with a number of tribes and had a fixed term of office. However, this post in Cottia was permanent and hereditary.