Władysław Opolczyk (1326/1332 - 1401) - the Duke of Opole in the years 1356–1401 1367–1372 Hungarian palatine, 1372–1378 great ruler of Halych Ruthenia, in 1378 the ruler of Poland, 1378–1392, the Duke of Dobrzyn and Kujawy (as a Polish vassal) - image according to the seal of the prince. The graphics come from a collection of woodcuts based on sketches by Jan Matejko. The publisher of the collection was the Warsaw printing house of Salomon Lewental, employing engravers: Józef Holewiński, Aleksander Tadeusz Regulski and Jan Styfi.