Vratislaus II of Bohemia
The papal legate, Cardinal Odo of Ostia, summoned the German prelates who were loyal to Pope Gregory VII to a synod at Quedlinburg. The synod issued a decree that papal judgements could not be questioned and forbade the faithful to make contact with those who had been excommunicated. In response, Henry held a general assembly in Mainz in late April or early May. Three or four archbishops and fifteen bishops obeyed his summons. They deposed their peers—two archbishops and thirteen bishops—who had failed to come to Mainz. The synod also established the "Peace of God" in Germany, prohibiting armed conflicts during the main Christian festivals. Vratislaus II of Bohemia, who had always been Henry's loyal supporter, was rewarded with the title of king during this meeting.