Marcus Aurelius Antoninus (121 -180 AD) was a Roman emperor from 161 to 180 best known as a Stoic philosopher. He was the last of the rulers known as the Five Good Emperors (a term coined some 13 centuries later by Niccolò Machiavelli), and the last emperor of the Pax Romana, an age of relative peace and stability for the Roman Empire. He served as Roman consul in 140, 145, and 161.
-Wikipedia