Magister Officiorum

  • The Magister Officiorum was the Head of the Civil Service and of the Palace Bureaucracy under Constantine I (324-337 CE).

Duties

  • Constantine created this role to limit the power of the Prefects of the Four Praetorian Prefectures.
  • All Provincial Administration was funneled through this Office, so that the Emperor could supervise the activities of the Praetorian Prefects.
  • The Magister Officiorum was also given control of the Cursus Publicus, Rome’s network of roads.
  • He was also in control of the Agentes in Rebus, a branch of the Roman Secret Service.
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