Retrieved from https://czasopisma.uni.lodz.pl/pnh [01.10.2021] REVIEW OF HISTORICAL SCIENCES 2017, VOL. XVI, NO. 3 http://dx.doi.org/10.18778/1644-857X.16.03.09 Mirosław J. Leszka * University of Lodz The Byzantines in the service of the Bulgarian rulers in the first half of the th9 century he Byzantines who lived in Bulgaria in the first half of the T9th century can be roughly divided into the ones who arrived due to the mass forced displacement and those who came as a result of their own, personal decisions1. The first group includes prisoners of war who came under Bulgarian control during armed operations and the people deported to Bulgaria from the seized Byz- antine territories. Such situations were recorded during the wars that Khan Krum fought against Nicephorus I and later against his successors: Michael I and Leo V. It is known that a large number of Byzantines found themselves in the hands of Bulgarians in con- sequence of events suchPNH as the conquest of Serdica in 809, the massacre of the Nicephorus I’s army in July 811 or the conquest of Byzantine fortresses: Develtos, Mesembria and Adrianople in the years 812–8132. Some of them returned to Byzantium relatively fast * The Faculty of Philosophy and History, The Institute of History, The Depart- ment of Byzantine History / Wydział Filozoficzno-Historyczny, Instytut Historii, Katedra Historii Bizancjum, e-mail:
[email protected]. 1 On the subject of the Byzantines in Bulgaria during the period of interest see R. Browning, Byzantines in Bulgaria – Late 8th–Early 9th Centuries, [in:] Studia Slavico-Byzantina et Medievalia.