Ammianus Marcellinus Libanius In Epistula 1063 dated 392 Libanius writes a letter to one Marcellinus who at the time of the letter is visiting Rome this person has been identified with the historian see for example PLRE E A Thompson The Historical Work of Ammianus Marcellinus However this identification has been challenged by several authorities G W Bowersock reviewing The Roman Empire of Ammianus in Journal of Roman Studies 80 1990 244 50 C W Fornara Studies in Ammianus Marcellinus I The letter of Libanius and Ammianus connections with Antioch Historia 41 1992 328 44 T D Barnes Ammianus Marcellinus and his world Classical Philology 88 1993 55 70 A reply can be read by J F Matthews The Origin of Ammianus Classical Quarterly n s 44 1994 pp 252 269 I m in the process of reading these papers so I m unable to provide a summary of them in the article I ve added these sources in case I don t add this material to the article for whatever reason I do have a life which comes before Wikipedia so it is likely