Tomasin is specific to the area that includes the Scavgoto, the Padovano, the Venetian, the Trevisano, the Udinese, the Goriška and the Trieste, Tomasini is typical of the central-eastern band of northern Italy, Tomasino has a nucleus in the Palermo and autonomous strains In Udinese, in the Bari and Salernitano, Tomaxini is precisely the Marche, Umbria and Lazio, Tommasini is specific to the three Venezie and Bolognase, Tommasino is typical of the Thyrrenian band from the province of Latina to that of Salerno, Tommassini very rare It would seem typical of the Grossetano, all derive from variations of the name Thomasinus, found in various medieval acts, derived as hypochoristric from the Latin name of Greek origin Thomas. In 1225 ~ we find a Thomasinus abbot in Rome, in 1252 the major council of Verona vows Alliance to Uberto Pelavicino and the commune of Cremona, present Thomasinus de Grezano and Mozocanus de Mozocanibus. In 1432 in Florence in an act of foster home, we already find the surname Tomasini: "Item consignaverunt ser Antonio suited ser masseyno chaplain Ecclesie Maioris Florentine domum in qua stat ad presens ser tomasinus cappellanus dicte ecclesie, de voluntate et Consentsu said Ser Tomasini, pro eius Habitatione eo tempore quo placuerit eorum offitio. ". In 1582, we find a student in Perugia the Marche Scipio Tommassinus.
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