I need some help with ancestry.  I am applying

Many times the same name was then given to another child.  Have you checked the records for a few years before and after the certificate that you found?  Did you use the site antenati to find the one you have?  I found many times in my family tree that the names were given to another child after the death (at birth or even after a few years).

Guillermo121, One thing you can do is start with your grandfather's U.S. death certificate. Should be easily obtained and should have his birth date, and parents' names, as well as town/city of birth. After you have the names, date, and place somewhat verified, I'd recommend you hire a service to obtain all the Italian documents and well as U.S. entry documents and naturalization records that are required. You will also need a bunch of U.S. documents to be translated and certified. A few internet searches will come up with Italian citizenship services. As long as you're willing to sign the checks, They take the head ache out of the process.