The Lombards having taken it again in 725, Charlemagne (Defender of the Faith) cleared them out by 774 and handed the island over to the Papacy, which had been the most powerful complainant of the island's devastation by Germanics.
Finds of Roman inspired Spangenhelm type helmets in Germanic chieftain graves, also tell us that the Germanics were in awe of Roman culture (generally speaking).