of Aurelius Mithres
Aurelius Mithres was a slave of an emperor who released him for his services. He was a strator (στράτωρ), which literally means a person who keeps, harnesses and cares for a horse for another person. He added the words 'Aurelius' and 'l. strator' to the inscription he dedicated to Serapis after he was freed by the emperor.
This monument, found in the Domus Flavia in Rome, bears an inscription by a certain Aurelius Mithres.