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 eastern borders of the province of Istria (and the Kingdom of Italy / Holy Roman Empire) according to the 10th-century work customarily titled De administrando imperio and ascribed to Eastern Roman Emperor Constantine VII Porphyrogenitus.
Aquileian patriarch [Raymond della Torre] catalogs his supposed rights and prerogatives in Istria to Venetian ambassadors [Marino Dauro and Pietro Tiepolo] – the Iura domini patriarche ac ecclesie Aquilegiensis in tota Istria.
The catalogue of rights that the Patriarchate of Aquileia enjoys in the Margraviate of Istria.
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.
The Venetian Senate revokes the privilege accorded to Labin by which the community was allowed to elect their own podestàs from among the Venetian noblemen; henceforth their rectors will be elected by the Venetian Great Council.