Křesomysl was the fifth of the seven Bohemian mythical princes between the (also mythical) founder of the Přemyslid dynasty Přemysl the Ploughman and the first historical prince Bořivoj. The names of the princes were first recorded in Cosmas chronicle and then transmitted into most of the historical books of the 19th century including František Palacký's The History of the Czech Nation in Bohemia and Moravia. One theory about the number of the princes is propped on the frescoes on the walls of the Rotunda in Znojmo, Moravia but Anežka Merhautová claimed that the frescoes depict all the members of the Přemyslid dynasty including the Moravian junior princes. Origin of the name Křesomysl's name is thought to be derived from the old Slavonic words "křesat" meaning to strike a light and "mysl" meaning mind or spirit thus literally the name should have meant "lighting the mind". The suffix -mysl is also in the other mythical names Přemysl and Nezamysl. Záviš Kalandra thought the names of the seven princes were cryptic names of ancient Slavonic days of the week - Křesomysl being the fifth - Thursday, in Latin Iovis Dies whereas Jupiter and Thor were both gods of thunder the word "křesat" is explained here as to strike the lightnings. Another theory says that the names were mistaken from a coherent and partly interrupted old Slavonic text. Seven mythical princes after Přemysl Notes Mythical Bohemian princes Přemyslid dynasty Fictional Czech people