Diadumenian
Appearance
Marcus Opellius Antoninus Diadumenianus, Roman Caeser (junior emperor), died 218 A.D..
Son of Emperorer Macrinus who served his father briefly as Caesar (junior emperor) from 217 to 218 A.D. and as Augustus in 218.
He had little time to enjoy his position or to learn anything from its opputunities because the legions of Syria revolted and declared Elagabalus ruler of the Roman Empire. When Macrinus was defeated on June 8, 218, at Antioch, Diadumenian followed his fathers death. According to the Scriptores Historiae Augustae, Diadumenian emulated Macrinus in tyranny. He called upon his father not to spare any who might oppose them or who made plots. His head was cut off and presented to Elagabalus as a trophy.