Crocco is widespread unevenly throughout the peninsula, in the Alessandria area and in the Genoese, Vicenza, Verona, Padua, Rovigo and Venice, in Campania, especially in the Caserta and Benevento areas, in Basilicata and in particular in the Cosenza and Catanzaro areas, Croccoli it seems unique, Croccolo is extremely rare, they are a hypocoristic form of the previous one, Croco, absolutely rare, it would seem of Neapolitan, Crocoli, very very rare, it is Roman, all these surnames should derive from the trade name of the dyer, originating from the Latin term crocus (saffron, yellow), we remember that the scientific name of the saffron is crocus sativus, but it is also probable that, in many cases, individualize Jewish families, characterized by nicknames originated from the edict of Pope Paul IV that had imposed to the Jews to bring a yellow cap, an edict that had effect particularly in the territories of the pontifical state, but also in the Serenissima and the Catholic Republic of Italy ta and in the south of the Angevins and the Aragonese. An important exponent of these families was the Lucanian bandit Carmine Crocco (1830 - 1905), born in Rionero in Vulture in the Potenza area. additions provided by Marco Russo it is not to be excluded that in the extreme south the surname Crocco derives more simply from the dialectal term "croccu" (Rohlfs) derived in turn from the Latin "croccus", with which the Calabrians indicate more commonly a hook, a hook or a curved iron. In the Calabrian dialect, always in the extreme southern variant, the "crocco" can also be a stick. Moreover it can take on a metaphorical connotation, among the Calabrian elderly it was customary to give the "crocco" to someone when one wanted to indicate a person whose dominant character traits are dullness and stubbornness. Noting the connections mentioned above, it is not to be excluded that the forefather was a manufacturer of hooks, hooks, needles, coat racks and sticks or that he had a hook in place of a hand or an entire amputated limb or that he had a back crooked.
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