First in Italy birth,marriaghe and death records are found in the city, the town or even the village of origin so when you say Campobasso you bring to mind that people would saty they come from Campo basso so that they would be identified as coming from that area but not necessarily the town or village where they were boprn which is in the province of Campobasso.
Seco nd are you looking for the family in Argentina or the fmaily in Italy you do not specify??????
If you are seeking the families in Argentina there are more than 100 people listed in the Argentina Telephone directroy and not all people have telephones like inthe USA. Please go to www.paginasamarillas.com.ar and just put in Peluso and the first name giovanni or Basilio. Petertimber