I know he tried to bring back the old gods of the Romans, but that is all he is known for.
First I heard he tried to return power back to the cities and provinces though
He was probably the best Emperor in the entire Constantinian dynasty, who were mostly power-crazed, fratricidal religious zealots. He was a great admirer of emperors such as the philospher-emperor Marcus Aurelius, and he slashed imperial bureacracy and returned imperial land back to the cities, and these reforms essentially meant that the cities gained power at the expense of the central Roman state.
He deserved a much greater title than the contemptuous one he was lumbered with by his post-contemporaries....