Vitoli, almost unique, is probably due to incorrect transcription of Vitol, which is typically Campano, of the Casertano, Neapolitan and Salerno in particular, Vitulli has a strain between Teatino and Campobassano, one between Barese, Tarentine and Materano, one in Naples and one in Rome, Vitullio is virtually unique, Vitullo has a Roman strain and one between Teatino and Iserniese, Vitulo, very rare, is typically Veneto, should derive from hypochoral forms more or less dialectal of the name Vito, but it is also possible, and in some cases probable, An ancient origin from the Latin name Vitulus (calf) of which we have an example in the Ab urbe topped di Tito Livio: "... Priestes Public and Pestilentia mortui sunt, Cn. Servilius Caepio Pontifex, Pater praetoris, et Ti. Sempronius Ti. F. Longus decemvir sacrorum, et P. Aelius Paetus Augur, et Ti. Sempronius Gracchus, et C. Mamilius vitulus Curio Maximus... ", the high diffusion, in Roman times, of the cognomen Vitulus in all the Sannio and also in the Veneto makes lean towards for this second hypothesis.
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