Aemilianus

Marcus Aemilius Aemilianus (/'aɪmɪliːɑːnʊs/; c. 207 – September 253), also known as Aemilian, was Roman emperor for two months in 253.

Commander of the Moesian troops, he obtained an important victory against the invading Goths and was, for this reason, acclaimed emperor by his army. He then moved quickly to Roman Italy, where he defeated Emperor Trebonianus Gallus at the Battle of Interamna Nahars in August 253, only to be killed by his own men a month later when another general, Valerian, proclaimed himself emperor and moved against Aemilian with a larger army.

Source: Wikipedia — https://en.wikipedia.org/wiki/Aemilianus