 As an elected and confirmed archbishop, Peter convened a provincial synod and reorganized the administration of the archdiocese of Split in 1185.Among others, he established the bishopric of Krbava (Corbavia), which became a new suffragan see of the Archdiocese of Split.The new bishopric lasted until the second half of the 15th century, when it was collapsed due to the Ottoman advance in Dalmatia.