Page "Otto III, Holy Roman Emperor" Paragraph 48

Bohemia, as a constituent state of the Empire, would be a major factor in the many battles along the Empire's eastern border.

Boleslaus I helped Otto I crush an uprising of Slavs along the Lower Elbe in 953 and in 955 the two joined forces to defeat the Hungarians at the battle of Lechfeld.

Otto I would in 973 establish the bishopric of Prague, subordinated to the archbishopric of Mainz, in order to Christianize the Czech territory.

To strengthen the Bohemian-Polish alliance, Boleslaus I's daughter Dobrawa was married to the pagan Mieszko I of Poland in 965.

The marriage helped bring Christianity to Poland.

He died in 972 and was succeeded as Duke by his oldest son Boleslaus II.