Roman Emperors and the \"King\" title

[Theodosius the Great]

I see here that his title was “Rex Regum et Ponticarum Gentium,” or “King of the Kings and of the Pontic People.” King of Kings is an translation from a Persian title, I think, but Pontus had been in the Empire since before it was an empire, over 300 years. So this is a rather odd title.

Ah, from the Anonymi Valesiani. Here's a link to the passage (scroll down to 6, 35).

Some think Hannibalianus' supposed title of King of Kings is indicative of Constantine's intention to place him on the Persian throne.

~Theo