Fa is typical of Pula and Cagliari in Cagliari, Faa is typical of Cagliari and Cagliari, Faà, much rarer, has a Piedmontese stock with Sardinian ramifications, should derive, at least the original Piedmontese stock from the dialectal word faa (fata), recalling the image on the coat of arms of the family, the Sardinian stock as well as being able to be derived from the Monferrato one, could derive from a nickname originated from the Sardinian word faa (fava).
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