What is "macrinus"

Macrinus (; – June 218), was Roman Emperor from 217 to 218. He reigned jointly with his son Diadumenianus. Macrinus' was by origin a Berber from Mauretania Caesariensis, As a member of the equestrian class he became the first emperor who did not hail from the senatorial class and the first emperor of Mauretanian descent. Before becoming emperor Macrinus served under Caracalla as praetorian prefect and dealt with Rome's civil affairs. He would later conspire against and have Caracalla murdered in a bid to protect his own life.

Macrinus would attempt to enact reform to bring economic and diplomatic stability to Rome, his predecessor's policies had left Rome's coffers empty and at war with several kingdoms, including Parthia, the Kingdom of Armenia and Dacia. While his diplomatic actions brought about peace with each of the individual kingdoms, the additional fiscal costs and subsequent fiscal reforms would generate unrest in the Roman military. This would pave the way for Elagabalus to lead a successful rebellion to overthrow and later execute Macrinus in 218.

Macrinus was a third-century bishop of Eleutheropolis in Judea and delegate to the first Council of Nicene.

Very little is known of his early life, career or Episcopal work. He was appointed as the bishop of Eleutheropolis in 325 and later in 325 Macrinus attended the First Council of Nicaea as a delegate representing Judea.