sentences:  The Corsican episcopate resented Pisan overlordship and the rival Republic of Genoa schemed to have Rome reverse the grant of 1077.The archbishops of Genoa soon challenged Pisa's authority in Corsica.Pope Calixtus II granted Pisa the right to consecrate all of the island's six bishops in 1123, but Innocent II divided this right between the archdioceses in 1133.