The first Uranius is mentioned only by Zosimus, and was briefly active during the latter part of the reign of Alexander Severus.
A second, and better attested usurper was Lucius Julius Aurelius Sulpicius Severus Uranius Antoninus, who appears to have been active in Syria in the early 250s AD.
Coins minted in Emesa have been found bearing his name, and invoking the local deity Sol Invictus.
If the later date is correct Uranius might have helped defend the Roman Empire against Shapur I, the Sassanid king of Persia.
Archived 2002-06-06 at the Wayback Machine Media related to Uranius at Wikimedia Commons This ancient Roman biographical article is a stub.