The last known member of the Tiberian-Julian dynasty,[1] Rhescuporis VI's reign can be dated precisely through numismatic (coins) and archaeological data,[1] which places him as ruling from 314 to 341.

[1] Some attempts have been made to reconstruct the line of successors to Rhescuporis VI, notably by Richard Garnett in the late 19th century, through the writings of 10th-century emperor Constantine VII.

That there was a Gothic takeover is among other evidence clear from a 404 letter to John Chrysostom, archbishop of Constantinople, in which a rex Gothiorum ("king of the Goths") requests a new bishop to the Bosporus; the only sufficiently powerful state in the region to support a diocese was the Bosporan Kingdom.

Eventually, the Goths appear to have left or been driven away from the Bosporus, leading to the resumption of Hellenistic rule under figures like Douptounos, who re-oriented the kingdom towards the Roman Empire as a client state.

[1] Beyond Douptounos use of Rome-friendly epithets and the assumption of the names Tiberius and Julius, alignment towards Rome is also indicated by the presence of coins from the reigns of emperors Justin I (r. 518–527) and Justinian I (r. 527–565) in the Crimea.

Gordas converted to Christianity under Justinian's sponsorship at Constantinople in 527, but was killed in a revolt upon his return home owing to his attempts at forcible conversion of his supporters and the populace.