Princisvalle and Princisvalli are absolutely rare, almost unique, they should be of Novarese and Verbanese, Princivalle and Princivalli a little less rare should be Veneti, Padua Vicentino the first and Treviso the second, derive from the name Medieval Princisvalle of which we have an illustrious example with Princisvalle Fieschi Bishop of Brescia from 1317 to 1325.
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