Discussing the work of Josef Kutnik leads to the following conclusions: 1. It cannot be said that today's Slovakia had a dense network of monasteries from the Great Moravian times and was a missionary center for other regions of the Slavic region. In the 10th century, it was rather a land on the periphery of the emerging new states and did not play a major role; 2. Isaac and Mateusz, martyred in the Międzyrzecz hermitage, came from Greater Poland, it would be unlikely that they came from the area of today's Slovakia; 3. The Hermites from Pereum traveled to Poland through Bavaria, Bohemia and Silesia; 4. The hermitage maintained close contacts with the Hungarians, and Bruno of Querfurt was perhaps the intermediary. The liturgical cult of hermits in Hungary could have been instilled by Bruno or, more likely, by Bolesław the Generous during his intervention in Hungary. These hypotheses require verification; 5. The work of the priest J. Kutnik is therefore an interesting, but unsuccessful attempt at a new interpretation of the episode of the Five Martyr Brothers.