ロンバルディア同盟
Bishop Pietro Toscani (1148–1180) was deprived of his episcopal cross and his "pallium" by Pope Alexander III in 1175 or 1176, because of his support for the Antipope Victor IV and the excommunicated Frederick Barbarossa. Frederick continued to protect him, however, even though the city of Pavia joined the Lombard League. After the Lombard League triumphed over Frederick at the Battle of Legnano, the Bishop's position became precarious. When Alexander reached an agreement with Frederick at their conference at Venice, Bishop Pietro was among those forgiven for their crimes.