The Isola Comacina, a small wooded island of Italy’s Lake Como, is in the late sixth century (around 587) a remaining Roman stronghold under Francio, a subordinate of Narses and his successors; though the surrounding areas are entirely controlled by the Lombards.

The island is besieged for a good deal of time by the Lombards under Authari, who releases Francio to flee back to the capital at Ravenna.

The Lombards find the island to contain "many riches" deposited for safekeeping by local Roman loyalists.

Alahis, Lombard Duke of Trent, again rises up, joining with the political opponents of the pro-Catholic Bavarian policy, at Perctarit's death in 688.

His son and successor Cunipert is initially defeated and forced to take refuge on the Isola Comacina, a small wooded island of Italy’s Lake Como.