on 21 april 1141, the metropolitan archbishop of ravenna, gualterius, was obliged to hold a synod at reggio, for the purpose of composing the differences which existed between the people and their leaders, as well as disputes among the leading clergy of the diocese. the synod was attended by bishop alberio of reggio, as well as by four other bishops. the archdeacon of reggio had issues with the canons of the cathedral and with the brothers of s. prospero as well, over various chapels and pieces of property.