Isaac was the exarch of Ravenna from 625 to 643, during the period of the Lombard conquest of Venetia.
The lagoon was settled in Antiquity, and in the 600s, there were numerous known towns, and several important cities. Venice, however, was not one of them.
An incomplete list of the Byzantine exarchs (vice-emperors) of the Exarchate of Ravenna.
A list of some of the main events of the Lombard conquest of Byzantine Venetia and other parts of Italy.