Vol. 2: A 804 usque ad 1077

Hugh of Arles and his son Lothair II, kings of Italy, donate Muggia to the Patriarchate of Aquileia.

Due to fair treatment and continuous protection, the city of Koper, represented by a locopositus, scabini, the protector of the people (advocatus totius populi) and many others, freely promise an annual gift of one hundred amphorae of wine to the Venetian Doge Pietro II Candiano, to be paid every year within ten days of the harvest, guarantee protection to all Venetians in their city, and prompt debt recovery.

Following a dispute between the Venetians and Istrians, one that resulted in the embargo on all trading between Istria and Venice, Margrave Winther, together with the people and the bishops of Istria, promise to cease all hostilities towards the Venetians, not to usurp or occupy the properties of the Patriarchate of Grado or Venetian bishoprics in the region, to regularly take cognizance of and adjudicate the complaints lodged by the Venetians against defaulting debtors from Istria, to abolish all the newly instituted duties and only charge the customary fees of a docking tax and a market fee, and to promptly inform the Venetians in case the king of Italy plans any offensive against them so that they could safely repatriate.

Thanks to the mediation of Marino, the patriarch of Grado, Lupus II, the patriarch of Aquileia, manages to reach a peace accord with Venice, represented by Doge Pietro III Candiano, but only under the condition that all the hostilities directed against Grado immediately stop and that the patriarch promises to inform Venice of any hostile plans directed against it.

After having invaded and conquered Italy, King Otto I convokes a diet in Augsburg whereby he bestowed upon the defeated Berengar II and his son Adalbert the Kingdom of Italy, albeit somewhat reduced: the marches of Verona and Aquileia were ripped off from Italy and appended to the Duchy of Bavaria, governed by Otto's brother Henry. Since Istria formed part of the "March of Aquileia" (i. e. Friuli), this event marks the beginning of a new chapter of Istrian history.

The eastern borders of the province of Istria (and the Kingdom of Italy / Holy Roman Empire) according to the 10^th-century work customarily titled De administrando imperio and ascribed to Eastern Roman Emperor Constantine VII Porphyrogenitus.

Doge Pietro IV Candiano reenacts a decree forbidding slave trading, originally promulgated by Doge Orso I Participazio, imposing further restrictions on dealings with slavers and regulating postal communication with the Byzantine imperial court.

Patriarch Rodoald donates Rovinj, a land that was destroyed by the "abominable Slavs", to the Bishopric of Poreč (13^th-century forgery).

Excerpts from the family chronicle of the counts of Sempt-Ebersberg regarding Ulrich I, the count of the march of Carniola; his heirs Adalbero II, Eberhard II and Williburga II; and Hademoud II, the daughter of Williburga II and the only surviving direct heir of House Sempt-Ebersberg. Hademoud II would marry Poppo II of Weimar-Orlamünde with whom she would have Ulrich I, the first margrave of Istria.

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 to Patriarch Vitalis of Grado and the bishops subject to him the jurisdictions, immunities, and other rights of their churches.

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.