This text focuses on the accumulation of knowledge concerning the Bulgarians and their situation in the 19th century. It discusses what caused the arousal of interest among the Poles concerning the Bulgarian territory. Information was provided not only by the contemporary press, but also accounts given by the Polish clergy and residents of that territory were also of great importance. What is more, these writers acquainted Polish readers with the unknown Balkan land and its residents. All statements given in reports concerned attempts to establish the Unified Church in Bulgaria and the role of the Poles in that process. The members of the Congregation of the Resurrection participated in the Bulgarian church unification with Rome. After the collapse of the November Uprising in Poland, an integral part of the Congregation consisted of Polish emigrants. As fellow Slavs, they felt ethnic and language affiliation with their Slavic brothers. In consequence of that feeling they were sent to conduct their missionary mission among the Bulgarians. The publication of Resurrectionists: Hieronim Kajsiewicz and Pawel Smolikowski, and works by the Jesuit Józef Holubowicz showed how difficult the situation of the Polish clergy was in the Balkans. In addition, they helped to create the stereotype image of the Balkan residents.