Ludovicus I Pius, imperator Imperii Romanorum

Emperor Louis the Pious informs Patriarch Fortunatus II of Grado and the faithful of the province of Istria that, at their request, he confirms the free election of the patriarch, bishops, abbots, tribunes and other authorities, that in the event of breach of faith, quarrels and oppression of the poor, the legal judgment awaits them and that violators of the Placitum of Rižana (doc. 804_PR) will be subject to the prescribed penance.

Emperor Louis the Pious and his son Lothar write to Venerius, the patriarch of Grado, confirming the possessions of his Church, including the Patriarchate's jurisdictions in Istria.

Louis the Pious and his son Lothar instruct Patriarch Venerius of Grado to go to Rome again to settle his dispute with the Patriarch Maxentius of Aquileia before the Pope and their messengers, despite the fact that Maxentius failed to attend the first meeting, causing Venerius to return home without any resolution.

Emperor Louis the Pious deposes several marcher officials – including Baldric, the duke of Friuli – from their offices due to their military impotence. As a result of Baldric’s deposition, the March of Friuli – which included Istria – is divided into four counties governed by their respective counts.

King Henry IV confirms the rights and possessions enjoyed by the Patriarchate of Aquileia, especially the parish (!) of Grado, bestowed upon the Patriarchate by Henry's predecessors and the Holy See.