Vai is typically Lombard, of the Milanese area, Pavese, with a strain also between Turin and Asti, one in Bologna and one in the Leghorn in Marciana and Portoferraio on the island of Elba, Vaio has a log in Turin and to Romano Canavese, and to Cocconato In the Asti region and a log in Naples and Grazzanise in the Casertano, they should derive from the medieval name Vaius of which we have an example in a script of 1358 in Trentino: "In Christi nomine. Amen. Year AB Eiusdem nativitate thousandth hundredth quinquagesimal octavo, a tenth Indictione, die Martis Quartodecimo entanging canteens iunii, in Monte Alochi vallis flemarum tridentinae diocesis, on site suited Rivus de Alocho. Praesentibus.. .. Simeon quondam Maltinpini de Mazugno, Otto Personela, Vaius Finae, Ser Dominicus de Gredena.. ", but it is also possible that the southern strains derive from nicknames originated from the Greek voice Phaios (gray, grizzled) or even from the word Vaio (type of squirrel whose Fur was used to make clothes.
Verba Volant, Scripta Manent