Rafał Kosiński is a professor of Ancient and Byzantine History at the University of Białystok. He graduated from the Jagiellonian University in Cracow where he also obtained his doctorate and habilitation. His research is mainly in the field of Late Antiquity, especially Church history and late antique historiography.Adrian Szopa is an assistant professor in the Ancient History Department at the Pedagogical University of Cracow. He earned an MA degree in history at the Pedagogical University as well as in classical philology at the Jagiellonian University in Cracow. His research is mainly in the field of Late Antiquity. He is a member of the Polish Historical Society and co-founder of the Polish Society for Ancient Studies.Kamilla Twardowska studied history at the Jagiellonian University in Cracow, where she also defended her doctoral thesis. She works at the National Museum in Cracow. Her research is mainly in the field of the political history of the Late Roman Empire.Aneta Zabrocka is a teacher at the British International School of Cracow. She graduated from the Jagiellonian University in Cracow with an MA degree in classical philology. She has taught at the Buccleuch Academy in Kettering, UK. She is interested in the Greek literature of the period of Late Antiquity.

• Introduction to Christological Controversy in 5th and 6th C. – Text and translation of the John Diakrinomenos’ Church History – Text and translation of the Church History of Theodore Lector – The Chronicle of Victor of Tunnuna – Text and translation of the further tradition associated with the Theodore Lector’s Church History