Guzzo

Some characteristic forenames: Italian Rocco, Angelo, Salvatore, Agostino, Carmelina, Domenic, Gildo, Giorgio, Nunzio, Santo, Saverio.

Italian:

from a late medieval personal name Guzzo, a shortened pet form of various personal names, for example Arriguzzo, from Arrigo (see Henry), and Uguzzo, from Ugo (see Hugh).

in the south, from the Sicilian and Calabrian dialect word guzzu ‘(aggressive) small dog, puppy’, applied as a nickname.