992 AD – He became the King of Poland.
984 AD – BolesBaw married Henilda, daughter of Rikdag, Margrave of Meißen.
997 AD – BolesBaw already possessed Silesia and Pomerania (with its chief city, GdaDsk) and Lesser Poland (with its chief city, Cracow).
1000 AD – The Emperor Otto III invested him the title Frater et Cooperator Imperii. 1002 – Boleslaw conquered Meißen and Lusatia
1003-1004 AD – BolesBaw conquered, and made himself Duke of, Bohemia, ruling as Boleslav IV.
1025 AD – He died on the 17th of June.