Peace treaty between Venice and the Patriarchate of Aquileia sanctioning Venetian jurisdiction over the Istrian communes that pledged themselves to the Republic of St. Mark in the last third of the 13th century.
Since Pietro Doria, the general captain of the Genoese armada, conquered Rovinj, fort Turnina, and Umag in Istria, as well as Grado in the Dogado, and relinquished all of these territories to the Patriarchate of Aquileia, Marquard of Randeck, Aquileian patriarch, returns the favour to admiral Doria and the Commune of Genoa by bestowing upon them various privileges in the said territories, including the right to appoint their own consuls to administer justice to the Genoese, as well as the complete exemption from all the tolls and taxes.
The communal council of Udine deliberates to provide armed escort to Domnius of Castello, the newly elected margrave of Istria. The final deliberation is missing, only the patriarch's proposal is recorded.
Istrian margrave Domnius of Castello issues orders to his subjects in Labin, asking them to release their prisoners and consign them to his care. Additionally, the margrave reminds his subjects to give him the customary tribute, the iura marchionis Istrie, under the penalty of twenty-five pounds of Veronese pennies.
Doge Antonio Venier asks Margrave Domnius of Castello to compensate the mussolati (traders) from Završje who were robbed of their wine in the district of Venetian Koper by his subjects from Petrapilosa. He also asks Domnius to exemplarily punish his subjects who committed this robbery.
Doge Antonio Venier advises Domnius of Castello to remain loyal to the Happy Union and supports its goals with all the means at his disposal.
Doge Antonio Venier asks Domnius of Castello to restitute to German merchants the goods they were robbed of in Friuli and to provide them safe passage to Venice.
Doge Antonio Venier asks Domnius of Castello to restitute to friar Wilhelm, the procurator of St. Anthony’s monastery in Venice, the goods that were stolen from him in Friuli and to exemplarily punish his subjects who committed this robbery.