following a brief reconciliation with king otto, eberhard then allied himself with duke gilbert of lorraine, archbishop frederick of mainz, and henry, otto's younger brother, in a new uprising. their united forces posed a serious threat to otto's rule; nevertheless, on 2 october 939, the rebels were finally defeated in the battle of andernach. eberhard of franconia was killed, allegedly by his conradine relative count odo of wetterau, whereafter his duchy was seized and remained a direct imperial possession until its dissolution in 1039.