Polish prose of the “Ukrainian school” in Polish literature, which in its artistic, aesthetic and ideological content was quite a noticeable phenomenon and still remains little studied in Polish and Ukrainian literary criticism. It is also important for us that the concept of literary Ukrainianism is reflected here. This is especially true of writers on the Ukrainian-Polish borderland, many of whom idealized the common Polish-Ukrainian history and were passionate supporters of the Cossacks, as well as those who were fierce opponents of the latter. It can be argued that romantic frontier prose also impresses with all the variety of themes, motives, topos, first of all, related to Ukraine. This is what prompted to choose the object of study of the artistic and textual array of creative heritage of Mikhail Tchaikovsky. The coexistence in the works of romance of myth and history was considered obvious, because historical events were to confirm the truth of the mythical story, the myth, in turn, was to give meaning to history. Given this, this study is relevant and timely, and this approach is quite justified. Tchaikovsky is considered the father of the Polish historical novel. The writer built his works on the basis of Walterscott’s model of the historical novel: a combination of love and historical-political plots. The work is a further step towards rethinking the place and role of Tchaikovsky’s work in Polish romanticism through the prism of the features of historical prose. At the theoretical level, it is an attempt to scientifically read works in broad connection with historical, social and cultural factors. Michal Tchaikovsky’s works on Ukrainian historical themes are undoubtedly a relevant and insufficiently covered topic in Ukrainian Polish studies, so they need new approaches and interpretations. The obtained results, no doubt, can be used in an in-depth and comprehensive study of the history of Polish and Ukrainian literature of the Romantic era. Work experience is also useful in conducting special courses and special seminars, will help in writing new textbooks and manuals, enriching modern knowledge of the theory and history of the “Ukrainian school” of Polish romanticism.