Walk to Canossa
During the Investiture Controversy of 1077, King Henry IV of Germany deposed the Veronese margrave Duke Berthold II of Carinthia, as he had sided with antiking Rudolf of Rheinfelden. On 3 April 1077 at Pavia Henry, on his way back from the Walk to Canossa, vested Patriarch Sieghard of Beilstein with immediate comital rights in the Friulian lands of Verona, raising him to the status of a Prince-Bishop. The remaining margraviate passed with the Carinthian duchy to Henry's vassal Liutold of Eppenstein.