Vratislav I , Duke of
Bohemia. Vratislav's father was Borivoj, Duke of Bohemia, who acceeded in 870 and died in 895. Vratislav's brother was Spyithnev, King of Bohemia. Vratislav I had a son named Boleslav I the Cruel, Duke of Bohemia, who acceeded in 929 and died in 972.
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