Macrinus in Wikipedia

Marcus Opellius Macrinus (ca. 165 – June 218), commonly known as Macrinus, was Roman Emperor from 217 to 218. Macrinus was of Berber descent and the first emperor to become so without membership in the senatorial class.[1] Background and career Born in Caesarea (modern Cherchell, Algeria) in the Roman province of Mauretania to an equestrian family, Macrinus received an education which allowed him to ascend to the Roman political class. Over the years he earned a reputation as a skilled lawyer. Under the emperor Septimius Severus he became an important bureaucrat. Severus' successor Caracalla appointed him prefect of the Praetorian guard. While Macrinus likely enjoyed the trust of Caracalla, this may have changed when, according to tradition, he was prophesied to depose and succeed the emperor. Rumors spread regarding Macrinus' alleged desire to take the throne for himself. Given Caracalla's tendency towards murdering political opponents, Macrinus probably feared for his own safety should the emperor become aware of this prophecy. According to Dio, Caracalla had already taken the step of re-assigning members of Macrinus' staff...