Vol. 3: A 1077 usque ad 1209

King Henry IV donates to Patriarch Sigehard and the Church of Aquileia the County of Friuli, the village Lucinico, and all the rights and properties that Count Ludwig had in the said county.

King Henry IV bestows upon Patriarch Sigehard and the Church of Aquileia the March of Carniola.

King Henry IV donates the County of Istria to the Patriarchate of Aquileia.

Henry, the incumbent patriarch of Aquileia, pledges his oath of fealty to Pope Gregory VII.

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 Gregory VII admonishes a noble knight Wezelin for attacking Dalmatia, ruled by a ruler approved by the Holy See, and orders him to immediately stop with the hostilities lest the "sword of St. Peter" be unleashed upon him and his followers.

Henry IV, King of the Romans, donates imperial rights over the Bishopric of Poreč, including the right to appoint and invest its bishops, to the Patriarchate of Aquileia and its Patriarch Henry.

Henry IV, King of the Romans, donates imperial rights over the Bishopric of Trieste, including the right to appoint and invest its bishops, to the Patriarchate of Aquileia and its patriarch Henry.

Henry IV, King of the Romans, explains the reasoning behind the donation of imperial rights over the Bishopric of Trieste to the Patriarchate of Aquileia and confirms the said donation.

Berthold II of Zähringen, the son of the deposed duke of Carinthia, attacks the properties of St. Gallen monastery whose abbot is Ulrich Eppenstein, the brother of Liutold, the incumbent duke of Carinthia, and Henry, the incumbent margrave of Istria (narrative account from the contemporary chronicle Continuatio casuum sancti Galli).

Duke Henry Eppenstein renounces the advocacy over the Church of Aquileia in favor of his brother Ulrich, the incumbent patriarch of Aquileia, who invests the chapter of Aquileia with the rights of advocacy over their possessions and Burchard of Moosburg with the remaining rights of advocacy.

King Henry IV donates regalian rights over the Bishopric of Pula, namely the right to appoint and invest bishops, to the Patriarchate of Aquileia.

Henry IV, emperor of the Romans, donates the March of Carniola to the Patriarchate of Aquileia and its patriarch Ulrich I. 

Ulrich II donates Sočerga to the Church of Aquileia.

Ulrich II Weimar-Orlamünde and his wife Adelaide donate their possessions in the County of Istria to Patriarch Ulrich of Eppenstein and the Church of Aquileia.

Ulrich II donates Oprtalj to the Church of Aquileia.

Henry of Eppenstein, duke of Carinthia, donates his castle "in the place that is called Ruvoyn" to the Church of Aquileia.

Ulrich II of Weimar and Orlamünde dies heirless after having repudiated his wife Adelaide; his patrimony in Thuringia is claimed by Siegfried of Ballenstedt, the son of another Adelaide, the daughter of Otto I of Orlamünde, but Emperor Henry V refuses to acknowledge this hereditary right and confiscates the family patrimony as imperial possessions; a feud breaks out – the original House Weimar-Orlamünde, which included Ulrich I, the margrave of Carniola, Istria and Savinja, dies out in male line (a contemporary narrative account penned by Ekkehard of Aura).

Siegried and Heliza, the noble citizens of Poreč, donate their possessions, a church dedicated to St. Peter in Poreč with all its dependencies and an allod called Mount Petrosus, to St. Michael’s monastery in Pula.

Patriarch Gerard donates a mill in Buzet in River Mirna, previously owned by a certain priest Martin, to the monastery of St. Peter the Apostle in Karst (in Vižinada by Buje); witnessed by Maynard I of Gorizia, appearing here for the first time as the advocate of the Patriarchate of Aquileia.

Pope Innocent II confirms the rights and privileges of the Patriarchate of Aquileia: the metropolitan jurisdiction over sixteen bishoprics, including all the disputed Istrian dioceses, and seven monasteries, grants him the pallium, and corroborates all the possessions and titles of Aquileian Church, including the "County, the March, the Duchy," the regalian rights and imperial privileges.

Patriarch Peregrine I donates the monastery of St. Peter in Vižinada by Buje to the Venetian monastery of St. Nicholas of Lido.

Aquileian Patriarch Ulrich II of Treffen launches an attack on Venetian Grado as he tries to subjugate the competing patriarchal see; he fails miserably and ends up locked in a Venetian prison where he “buys” his freedom by signing a new treaty with Venice and agreeing to a yearly tribute of twelve loaves of bread and twelve pigs that his Church would perpetually bring to the ducal palace of Venice before the Fat Thursday festivities (narrative accounts from later Venetian chronicles).

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.