Extensive seems to have a strain in the Brindisino, which could derive from the toponym vast (LE), one in the Catanzaro and one in Sicily in Catania, which could derive from the apheresis of the surname Savasta. Integrations provided by Giovanni Vezzelli for P. Minervini (Diz. Cogn. Pugliesi, 501) The vast surname could derive from the name Vasto (CH) or from the Latin ' vastus ' = depopulated void, then crossed with the A.A.T. ' wuosti ' = empty, deserted. For G. Rohlfs (Diz. Cogn historian. In eastern Sicily, 192) derives from the Spanish surname Basta.
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