What family lineage was XXX part of?
Doubravka of Bohemia
Doubravka of Bohemia or Dobrawa, Dąbrówka (Czech: Doubravka Přemyslovna, Polish: Dobrawa Przemyślidka, Dąbrówka Przemyślidka) (ca. 940/45 -- 977) was a Bohemian princess of the Přemyslid dynasty and by marriage Duchess of the Polans.
Přemyslid dynasty