The study discusses the emergence and development of medieval Western European sovereign genealogical speculations, which was used also in the Czech Lands under the rule of Charles IV. As the grandson of Bohemian kings, he also emphasized Czech ancestral traditions.
Charlesʼs eldest son Wenceslas identified with it, but Charlesʼs French and possibly also Moravian nephews, accepted the legend of Melusine as family founding myth of the House of Luxembourg. In the negotiation with the Czechs Charlesʼs younger son Sigismond emphasized the Přemyslide tradition.