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Why was Eberhard of Bavaria deposed by Otto I?

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Eberhard of Bavaria was deposed and outlawed by Otto I because he participated in a rebellion against the king’s authority shortly after Otto ascended to the throne in 936.1

Upon becoming king, Otto I sought to firmly assert his suzerainty over his vassal dukes, a policy that triggered immediate conflict with several nobles, including Eberhard of Bavaria and Eberhard of Franconia. This resistance was further fueled by discontented Saxon nobles led by Otto’s half-brother, Thankmar. Following the defeat of these rebellious forces, Otto took decisive action to consolidate his power, resulting in the deposition of Eberhard of Bavaria.1