Aggi is absolutely rare, it could be from northern Italy, Aggio, much less rare, seems to have a stock. between Paduan and Rovigoto, one in the center of Lombardy and one in Piedmont from Novara to Turin, may derive from the aphaeresis of toponyms such as Baraggia (NO) - (VC) - (VA) or similar, but is more likely to derive from the medieval name germanico Aggiuo, of which we have an example in the Gesta Danorum of Saxo Grammaticus of the XIIth century: "... His accedunt Skalc Scanicus et Alf Aggi filius, quibus iunguntur Olvir latus et Gnepia vetulus. His adnumeratur Gardh, Stang oppor cultor.. .. ".
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