Marcus Aurelius Probus ( 230–235 – September 282) was Roman emperor from 276 to 282. Probus was an active and successful general as well as a conscientious administrator, and in his reign of six years he secured prosperity for the inner provinces while withstanding repeated invasions of barbarian tribes on almost every sector of the frontier.
After repelling the foreign enemies of the empire, Probus was forced to handle several internal revolts but demonstrated leniency and moderation to the vanquished wherever possible. Despite the military basis of his power, he presented himself as a constitutional monarch who respected the authority of the Roman Senate.
 
 Praetorian Guard Marcus Aurelius Carus had been proclaimed, more or less unwillingly, emperor by his troops. Probus in turn sent some of his men against this new usurper, but when they changed sides and supported Carus instead, the Emperor's remaining soldiers decided to assassinate him at Sirmium sometime in September or October of 282.