The Enmannsche Kaisergeschichte (in English often called Enmann's Kaisergeschichte) is a modern term for a hypothesized Latin historical work, written in the 4th century but now lost.
The German scholar Alexander Enmann made in 1884 a comparison of several late Roman historical works and found many similarities, which could not be explained by a direct literary relationship between the extant works (Eine verlorene Geschichte der roemischen Kaiser und das Buch De viris illustribus urbis Romae). Enmann postulated a theory of a lost historical work, which was the common source for authors including Aurelius Victor, Eutropius and the author of the Historia Augusta.[1] The work is not mentioned by any late Roman historian, but Enmann's analysis is today largely accepted and modified.[2] However, there are some scholars, especially den Boer, who would question its existence, but the majority accept it.[3]
The Kaisergeschichte (History of the Emperors) was a brief historical work. It had covered the time from emperor Augustus to 337 or 357.[4] It was used by Aurelius Victor, Eutropius, Festus, the Historia Augusta, Jerome, the anonymous Epitome de Caesaribus, and other late Roman histories.