Istria as described in the chapters of Cosmography, penned by the anonymous Ravenna Cosmographer (Anonymus Ravennas), including the region's rendition on the famous Peutinger's Map (Tabula Peutingeriana).
The last will and testament of Doge Giustiniano Particiaco, ordering, among other things, the construction of a new church next to the ducal palace where the newly procured remains of St. Mark the Evangelist ought to be deposited.
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.
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.
Emperor Otto II confirms to Patriarch Vitalis of Grado and the bishops subject to him the jurisdictions, immunities, and other rights of their churches.
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.
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).
Pope John XIX confirms the possessions of the Patriarchate of Grado.
Following the Synod of Rome, convened to resolve the recently rekindled conflict between the patriarchs of Aquileia and Grado, Pope Benedict IX writes to Urso, the patriarch of Grado, informing him of the Synod’s decision to support the cause of his church against the Aquileian Patriarch Poppo, who had recently launched a second military invasion of Grado before his untimely death; the pope confirms the metropolitan status together with the ecclesiastical and secular jurisdictions of the Patriarchate of Grado, dubbed “New Aquileia” for the very first time in an authentic papal document.
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.
The people of the Commune of Pula swear fealty to Doge Pietro Polani and to the Commune of Venice, promising military aid in the form of arming one galley per every fifteen Venetian galleys during Venetian military campaigns, to support the Venetian military efforts in the Adriatic, in the zone between Dubrovnik, Venice, and Ancona, and to defend Venice if they see hostile ships approaching their city, exempting the Venetians from all the dues and tolls in their city except the harbor tax (portaticus), guaranteeing safety and judicial autonomy in disputes between Venetians and the citizens of Pula, gifting the doge and the Commune of Venice with a house by the city’s gates, and agreeing to swear the same promise of fealty to every new doge upon his consecration; the doge and the Commune of Venice agree to defend the Commune of Pula against their enemies and to treat the citizens of Pula as their own citizens in Venice.
On his return from the Holy Land and from the Second Crusade, King Conrad III sails through the Adriatic and stops in Pula, from where he continues the journey towards Germany by land, traveling through Aquileia to Salzburg before finally reaching Regensburg (narrative account from The Deeds of Emperor Frederick I by Otto of Freising).
Five Istrian communities – Pula, Rovinj, Poreč, Novigrad and Umag – pledge their fealty to the doge of Venice and his successors, promising military support, a variety of symbolic tributes to St. Mark, the patron saint of Venice, and to the doges, guaranteeing the safety of all the Venetians in their jurisdictions and abolishing all the dues for Venetian traders.
The people and the clergy of Pula agree to a final settlement with Venice whereby they fully acknowledge their fault for the military actions directed against them and renounce all their claims for further recompense and restitutions.
The consuls and the people of Pula write to the patriarch of Aquileia Ulrich II, informing him that they are aware of the emperor’s arrival (in the vicinity of Venice) and that the imperial assembly will be convened on May 22; therefore, they ask him to take up with the emperor their complaints against the Venetians, who treat them as their subjects.
Emperor Frederick I confirms the rights and possessions of the Bishopric of Torcello.
On their way to engage the inimical Pisan fleet, the Venetian armada stops in Pula to receive additional military support; met with refusal, the Venetian fleet attacks Pula, razes its walls, and sacks the city; defeated, Pula reacknowledges fealty owed to Venice (narrative account as featured in the so-called Annales Venetici brevis).
In the name of the community of Barban, Pribislav, the gastald of Barban, subjects his village to the podestà and the Commune of Pula, promising to pay the standard dues – the quarter of the tithe and the grazing due – to the Commune of Pula and to receive justice from the podestà and the magistrates of Pula; the subjection is subsequently ratified by twelve people of Barban.
In the name of the community of Prnjani, Stepizus subjects his village to the podestà and the Commune of Pula under the same conditions and promising the same oath as the villagers of Barban.
Answering the pleas of Aquileian Patriarch Berthold, Emperor Frederick II proclaims and ratifies the verdict of the imperial princes gathered at the Diet of Ravenna, confirming the secular rights and prerogatives of Aquileian patriarchs and forbidding the election of rectors and the exercise of regalian rights to the subjected urban communities, especially to the Istrian cities of Koper, Poreč, and Pula.
The Venetian navy sets out to engage the inimical fleet of Emperor Frederick II and the Pisans, but the Commune of Pula refuses to arm a galley for the military undertaking, provoking Venice to attack the city and raze its walls; on the way back, in October of the same year, the Venetians attack the rebelling Pula once again (narrative account from Andrea Dandolo’s Chronica per extensum descripta).
Nascingwera, the regalian podestà of Pula, and the communal council of the city elect and constitute priest Hugh and subdeacon John de Spago as the official representatives of the Commune of Pula, delegated to sign a new peace treaty with the doge and the Commune of Venice following their recent inimicalities.
The communes of Venice and Pula sign a new peace treaty and agree on ten articles regulating their future relations.
The people of Pula, united in the general assembly, formally ratify the treaty signed between the representatives of their commune and Venice on January 21, 1243 (doc. 1243_PP).
Monfiorito of Pula pledges loyalty to the Aquileian Patriarch Gregory of Montelongo, promising to uphold the rights and honor of his Church, to reimburse all goods received from the patriarch and his people, to immediately and unconditionally withdraw from Motovun, and to appoint suitable sureties for the fulfillment of these commitments in form of sworn guarantors. This oath is subsequently reaffirmed in Muggia as Monfiorito, along with the representatives of the Commune of Pula, provides thirty-one persons as his sworn guarantors.