Question: Zwentibold was a member of a dynasty that was a Frankish noble family with origins in what clans?
Sentence (from "Rossetti"): The origins of the Rossetti family suggest descent from the Della Gherardesca family, a noble family of Germanic origins whose alliance with the Hohenstaufen Emperors had brought the family to prominence in Tuscany, and made them the leaders of the Ghibellines, who feuded against the Guelphs for political control.
Relevant evidence: No