Acta pontificum Romanorum

Pope Pelagius II confirms Grado as the new metropolitan see of the ecclesiastical province of Venetia et Histria; 11th-century forgery.

Pope Sergius IV confirms the jurisdictions of the bishops of Poreč over Rovinj, Dvigrad, and Bale that were disputed by the Aquileian patriarch John.

Pope Gregory VII formally bequeaths to Henry, the patriarch of Aquileia, the right to don the pallium even on the feast days of St. Ulrich and St. Afra as compensation for the help he had provided to the papal legates, the bishops of Padua and Albano.

Pope Alexander III assumes the chapter of Aquileia and its canons under his protection and confirms all their possessions and jurisdictions.

Pope Alexander III confirms the spiritual and secular jurisdictions of the bishops of Poreč.