Nyorai kuenderera mberi kweiyi ndima - Mumwe Bhishopi Pietro aive mumwe weavo muna 1241 vakaitwa nhapwa naMambo Frederick II paHondo yeGiglio
, pavaienda kunopinda musangano muRoma wakadanwa naPapa Gregory IX. Bhishopi Melchiorre Busseto muna 1284 akaurayiwa nevateveri vaWilliam VII, Marquess weMontferrat, iyo Marquess yakarasikirwa nekodzero dzake dzese dzekutsigira muDhiocese yeTortona, uye akamanikidzwa, asina shangu uye akapfeka hembe chete, kufamba kubva panzvimbo yekuurayiwa kwemabhishopi kuenda kuchechi huru.