Doubravka of Bohemia, Dobrawa was a Bohemian princess of the Přemyslid dynasty and by marriage Duchess of the Polans.
Doubravka, as imagined by Jan Matejko
Doubravka of Bohemia (Dobrawa) according to Jan Matejko (1886)
Boleslaus I, Duke of Bohemia
Boleslaus I, a member of the Přemyslid dynasty, was ruler of the Duchy of Bohemia from 935 until his death in 972. He is notorious for the murder of his elder brother Wenceslaus, through which he became duke.
Murder of Duke Wenceslaus, Liber viaticus (14th century)
Expansion of the Bohemian state during the reign of Boleslav I and Boleslav II