ミェシュコ1世
The next year Duke Henry II of Bavaria openly revolted against his Ottonian cousin Emperor Otto II, backed by Bavarian and Saxon nobles, and even obtained the support of Duke Boleslaus II of Bohemia and Mieszko I of Poland. Emperor Otto II had to struggle for his rule, finally in 976 he marched against the Bavarian capital Regensburg and declared Duke Henry II deposed.