Boleslav II of Bohemia

For another (Boleslaw) Boleslaus the Pious, see Boleslaus of Greater Poland. Boleslaus II the Pious (; c. 920 –  February 7 999) was the duke of Bohemia from 972, a member of the Přemyslid dynasty.The son of Boleslaw also called Boleslaus I and Biagota, Boleslaus II became Duke (or Prince) in on his father's death. Boleslaus maintained good relations with the Ottonian German kings, and in 975 supported Otto II during his civil war against Henry II, Duke of Bavaria. In 977, Boleslaus again attacked Bavaria, but on this occasion was barred from annexing any lands by Otto II.
See more at Wikipedia.org...