== 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.)