Pedzisa mutsara unotevera: Mumwe Bhishopi Pietro akanga ari mumwe weavo muna 1241 vakaitwa vasungwa naMambo Frederick II pa
Hondo 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 kwebhishopi kuenda kuchechi huru.