Vratislav I
Vratislav I was duke of
Bohemia (
915-
921). Vratislav's father was Borivoj, Duke of Bohemia, who acceded in
870 and died in
895. He was the first (historically known)
Premyslid (Přemyslovec in
Czech) duke of Bohemia. Vratislav's brother was Spytihnev, Duke of Bohemia (
895-
915). Vratislav I had two sons,
Václav and
Boleslav.