Emperor Justinian I issues a pragmatic sanction regulating the administration of the newly conquered Italy (the so-called sanctio pragmatica pro petitione Vigilii or epitome constitutionum Iustiniani de reformanda Italia).
King Charlemagne bestows to the Church of Aquileia the right to canonical election of their patriarchs (that nonetheless requires royal confirmation) and exempts it from public taxes such as the tithes, the grazing fees for livestock sent to graze in Istria, and war taxes (lodgings and provisions for the army) unless the royal military is forced to pass through Friuli and the Treviso region.
King Charlemagne confirms the possessions of the Church of Aquileia and grants it immunities.
Emperor Charlemagne subordinates six episcopal sees to the Church of Aquileia, badly damaged by the incursions of the pagans; late-10th-century forgery.
Emperor Charlemagne bestows immunities upon the Church of Grado due to the special services and merits of its incumbent Patriarch Fortunatus II.
Emperor Charlemagne exempts the four ships of Fortunatus II, "the patriarch of the Venetians and Istrians," from all the tolls.
Emperor Louis the Pious promises to Patriarch Fortunatus II and to all the Istrians that their right to elect their own patriarchs, bishops, abbots, tribunes, and other officials will be respected and that the rulings of the judicial assembly (placitum) held by Rižana will be upheld.
Emperor Lothair I confirms the immunities enjoyed by the Church of Aquileia and its right to canonically elect their patriarchs.
Emperor Louis II assumes under his protection the monastery of St. Michael in Diliano and its abbot Felmo, bestowing upon the monastery immunities and the right of free election of its abbots.
Emperor Louis II confirms the charter of Lothair I to the Patriarchate of Aquileia regarding the dispute with the Patriarchate of Grado that was settled at the Synod of Mantua in 827: the patriarchs of Aquileia are to enjoy the metropolitan jurisdiction over all the Istrian bishoprics.
Emperor Louis II confirms to St. Michael's monastery in Diliano and abbot Felmo the right to have two lay advocates - the brothers Petronasius and Talasius - to defend their rights.
Emperor Otto I donates Izola in Istria to the Venetian Vitale Candiano.
Emperor Otto II gifts large estates on both sides of the Alps, including the Province of Istria, to his wife Theophanu as a dowry.
Otto II, Emperor of the Holy Roman Empire, donates properties in the March of Carniola to Abraham, the bishop of Freising.
Otto II, Emperor of the Holy Roman Empire, donates properties in the March of Carniola to Abraham, the bishop of Freising.
Emperor Otto II confirms the purchase of Izola, sold by Vitale Candiano to Patriarch Rodoald of Aquileia.
Emperor Otto II confirms the jurisdictions of the bishops of Poreč and grants them immunities.
Emperor Otto III confirms the donation of six bishoprics to the Patriarchate of Aquileia issued by Charlemagne and donates three abbeys to the same Church.
Henry II, King of the Romans, donates properties in the March of Carniola, including the castle Bled, to the Bishopric of Säben (later Brixen) and its bishop Adalbero.
King Henry II confirms Otto III’s donations of Pazin and Pićan to the Church of Aquileia and donates various jurisdictions in these two places, terrains to both sides of the river Raša, and the port of Plomin.
The ruling of the royal court, chaired by Konrad II and his son Henry in Verona, by which the duke of Carnithia, Adlapero, renounces his claims to various obligatory services (fodrum, angaria, servitium publicum) owed to him by the subjects of the Church of Aquileia. By official decree of the imperial court, the Church of Aquileia, represented here by patriarch Poppo and advocate Walpert, is to be free from any services owed to the dukes of Carinthia.
Emperor Conrad II bestows upon Aquileian Patriarch Poppo the right to mint coins that ought to be of equal or greater value than the Veronese denars.
Emperor Conrad II confirms the decisions of the Synod of Rome from 1027 regarding Aquileian jurisdiction over Grado, invests the patriarchs of Aquileia with the possession of “the parish of Grado”, and donates Venetian territories between the rivers Piave and Livenza to the Patriarchate of Aquileia.
Upon the petition of the citizens of Koper, who suffered due to their allegiance to the Empire, Emperor Conrad II confirms their possessions, their customary law, immunities, and the freedom to trade in the Empire.
Emperor Conrad II donates Lovrečica to the Bishopric of Novigrad.