It seems there are a lot of different ways to spell this name. All my Iacovone's are from Caserta, just north of Naples, in San Clemente, Gallucio. My grandmother's father was Francisco Iacovone - he lived in both Rhode Island and Montreal at various times in his life having apparently abandoned his wife in Italy from all appearances.
So another location for you to investigate. I figure the only way I'll get back further is to visit the town since Italy doesn't have a lot of information on the web as of yet.