Marcus Opellius Antoninus Diadumenianus or Diadumenian (d. 218) was the son of Roman Emperor Macrinus, who served his father briefly as Caesar from May, 217 to 218, and as Augustus in 218.
It should be recalled that Macrinus was a Moor, from an indigenous people of North Africa. He became an Emperor following the assasination of Caracalla, another Muurish Emperor of Rome, who was the son of Septimus Severus, another Muurish Emperor of Rome and the founder of the Severan Dynasty.
Diadumenian had little time to enjoy his position or to learn anything from its opportunities because the legions of Syria revolted and declared Elagabalus ruler of the Roman Empire. A civil war ensued.
When Macrinus was defeated on June 8, 218, at Antioch, Diadumenian followed his father’s death.
According to the Scriptores Historiae Augustae, his head was cut off and presented to Elagabalus as a trophy.
Diadumenian, A.D. 218 Nicopolis ad Istrum, Hera
OBVERSE: Draped bust right
REVERSE: Hera standing left holding patera.
25 mm – 10 grams