Hostilian was the son of Trajan Decius and brother of Herennius Etruscus. He was made Augustus along with his father and brother shortly before heading out to meet a barbarian army. Both Decius and Etruscus died in battle leaving him as sole emperor, briefly, before one of Decius's generals, Trebonianus Gallus, was also elevated to the throne by the surviving soldiers. Hostilian died soon after of the plague at a young age.
RIC 177b, RSC 15 AR Antoninianus Obv: CVALENSHOSTILMESQVINTVSNC, radiate and draped bust right.
Rev: MARTIPROPVGNATORI, Mars advancing right, holding spear in right hand and shield on left arm.