Diadumenianus

or Diadumĕnus, M. Opelius. A son of the Roman emperor Macrinus, who bestowed upon him in A.D. 217 the titles of Caesar, Princeps Iuventutis, Imperator, and Augustus. After the victory of Elagablaus, he was sent to Artabanus, king of the Parthians, and was murdered at about the same date as that of his father's death. Diadumenianus is said by Lampridius to have been a most marvellously beautiful child, so that the biographer compares his face to a heavenly star; but if so, the coins on which his likeness appears do him a sad injustice.