The Scriptores Historiae Augustae

The Historia Augusta (or Scriptores Historiae Augustae) is a series of biographies of Roman emperors, heirs, and claimants from Hadrian to Numerianus (117 284 CE) modeled on Suetonius Lives of the Caesars (second century CE). Of uncertain reliability and authorship, it is now attributed by many authorities to one late fourth century CE author.