I have been trying to trace back my Italian roots, but unfortunately have not been able to get any further back than my great-grandparents, of who I have been able to find some US records. What I'm looking for is any additional information/records/etc I can find on the Italian side, especially anything like their parents names, which could lead further back and to more info.
Here is what I have on them, based on US records I found and the little bit of info family could provide:
Giovanni Battista Costanzo (Born ~1896) married to Guiditta (Judith) Di Siena (presumably born around the same time). Both were from Coreno Ausonio, and I assume married there since I found no US marriage certificate.
Thank you so much in advance for any information, tips, advice, or leads at all that anyone can provide!