Vol. 2: A 804 usque ad 1077

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.

The city of Koper renews its pact of fealty to the doge and the city of Venice, promising the security of all Venetians in their city, the remission of duties of transport and commerce, the payment of the customary tribute of one hundred amphorae of wine every year, judicial autonomy, perpetual peace and alliance even in case of war against other Istrian communities.

Emperor Otto II confirms the jurisdictions of the bishops of Poreč and grants them immunities.

A public placitum held in front of Istrian Count Werihen whereby the dispute between the Bishopric of Poreč, represented by Bishop Andrew, and a Bertha, a widow of a Cadoloh, regarding the latter's fiscal obligations towards the Church of Poreč (herbaticum and glandaticum) is judged in Bertha's favor.

A Sergius donates his properties in Rumijan to St. Michael’s monastery in Pula.

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.

Venetian Doge Pietro II Orseolo departs with his navy on a military expedition against Croats and Narantines in Dalmatia; on his journey, the doge stops at Poreč and Pula where he is cordially greeted by the bishops, clergy, and citizens of these Istrian cities (narrative account from John the Deacon’s Istoria Veneticorum).

Emperor Otto III donates half of castrum Solkan and half of village Gorizia, together with half of the territories between Rivers Isonzo/Soča, Vipava/Vipacco, and the plateau of Trnovo, to the Church of Aquileia and its incumbent Patriarch John IV.

Emperor Otto III donates half of Solkan and Gorizia, together with half of their respective appurtenances, to Werihen, count of Friuli.

A placitum presided by Otto of Worms, duke of Carinthia and Margrave of Verona, deliberates on the matter of the authenticity of the donation charter issued by Emperor Otto III to Werihen, count of Friuli, bestowing upon the recipient half of Solkan and Gorizia (doc. 1001_GW); the judicial assembly finds the charter authentic and confirms the legal possession of the endowed Werihen.

St. Michael's monastery in Pula, represented by abbot Andrew, exchanges properties with an Urso.

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

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.

Pope John XIX and Emperor Conrad II convene a synod in Rome whereby the decrees of the Synod of Mantua from 827 are confirmed and the patriarch of Aquileia is once again proclaimed the sole metropolitan head of the ecclesiastical province of Aquileia with Grado being a mere parish subjected to his metropolitan and diocesan authority.

The ruling of the royal court, chaired by Emperor Conrad II and his son Henry in San Zeno in Verona, by which the duke of Carinthia, Adalbero of Eppenstein, is forced to renounce his claims to exact fodrum - a levy in kind for the upkeep of the royal retinue during the king's stay in Italy - from the subjects of the Church of Aquileia. By official decree of the imperial court, the Church of Aquileia is to be free from this levy to the dukes of Carinthia.

Pope John XIX confirms the jurisdictions and possessions of the Church of Aquileia, including the "parish of Grado" as per the conclusions of the Synod of Rome that took place five months earlier, and bestows the pallium upon the incumbent patriarch.

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.

Engelmar, the bishop of Poreč, donates the monastery of Saint Cassian in Poreč to the monastery of Archangel Michael in Pula.

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.