Text draws attention to several Czech sources from the 15th century indicating that the Přemyslid Opava dukes were completely irrelevant at that time. Nevertheless, the members of several Czech noble families married the daughters of the Opava dukes. And the last Přemyslids made sure that there would be spectacular displays of power representation, which are briefly presented here, though. Importantly, their political will, expressed at least since 1469, decided that the Duchies of Opava and Krnov became part of Silesia and withdrew from the Moravian political environment, without the participation of political elites (estates) in Kingdom of Bohemia. This is the reason why it is necessary to try to build a narrative about the past of the Czech state (within its historical boundaries) as an alternative to the dominant, bohemocentric one.