Dr Andrea Bernier studied ancient history at the University of Parma, where he obtained an MA (2013) and a PhD (2017), submitting a thesis on the legislation of the emperor Valentinian I. In 2017/2018, he held a fellowship at the Istituto Italiano per gli Studi Storici Benedetto Croce (Napoli) and in 2020, he was granted a DAAD scholarship for research at the University of Tübingen. From 2020 to 2022 dr Andrea Bernier participated in the creation of the PPRET Inscriptions DATABASE  on the Inscriptions pertaining to the Praetorian Prefects from 284 to 395 AD (Strasbourg, MISHA, 2022). In 2023, he was granted a 2-year postdoctoral fellowship under the POLONEZ BIS programme for a research project on the Theodosian Code at the University of Toruń (UMK). His research focuses on the administrative system of the later Roman empire with particular emphasis on the ancient law codes as sources for the history of 4th and 5th Centuries and the agrarian history of late and post-Roman Europe.

Prof. dr hab. Szymon Olszaniec – professor at the Faculty of History of Nicolaus Copernicus University in Toruń, Poland. His research interests focus on history of Late Roman Empire (284-643 A.D.), especially religious history of that period, prosopography, history of the Roman administration and offices (till the implementation of thematic system). He has published monographs and articles which concerns religious reforms of the Emperor Julian (361-363 A.D.), elite of palace dignitaries (comites consistoriani) in the 4th century A.D. and the prospography of that group of dignitaries, creation and functioning of the praetorian prefecture of Italy, Illyricum and Africa in the 4th and 5th centuries A.D. He is a member of The Society for the Promotion of Roman Studies, the Committee on Ancient Culture of the Polish Academy of Science, the Byzantinological Commission of the Polish Historical Society, and editorial Council of journal Studia Ceranea. Journal of the Waldemar Ceran Research Centre for the History and Culture of the Mediterranean Area and South-East Europe.