It is not even sure that Biagota was the mother of all four adult children of Boleslaus I. (Dobrawa, Boleslaus II of Bohemia, Strachkvas and Mlada of Bohemia). Her origin is not cleared up. She could originate from one of German states of Holy Roman Empire or from Slavic country (Blahota or Bjegota was old Bulgarian name). Both hypotheses could be right, corresponding to the contemporary practice of European rulers.