Corbi is typical of Rome and of Cori and Sezze in the province of Latina, with a stock also in Naples, Corbin, absolutely rare, would have been from Padua or Venice, Corbini would seem to be specific to Siena, Corbino has a stock in Rome and one in Ischia, but the main nucleus would appear in Sicily to Scordia (CT) and Vittoria (RG), Corbo, typically from Campania, has stocks in Rome, in Molise, in the Foggia area, in the Potenza area, in the Agrigento area and in the province of Naples, Corboni seems to be unique, they should all derive either directly or through hypocorisms from the medieval name Corbus of which we have an example in the year 604: "... Year 9 kingdoms Theuderici nascitur and the filius de concubina, nominations Corbus. Cum jam Protadius genus Romanus vehementer ab omnibus in palatio veneraretur. .. ", a principle of this surname can be found in the Diplomatic Code of medieval Lombardy in a Libellus of 1148 in Milan:" Year dominice incarnationis thousandth penny quadragesimo octavo, tertio die mensis aprilis, i ndictione undecima. Placuit atque convenit inter Petrum qui dicitur de la Mamma et Guifredum qui dicitur Corbus, both de la civitate Mediolani, nec non et inter Petrum qui dicitur de Barzago, de suprascripta civitate ... ".
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