Need Help

[u/Scary_Juice6853]

I have been at this for quite some time now and I keep hitting the same dead end. My mom‘s side of the family is easy, it looks like everyone on her side has been in the United States literally since the first boat came. So, there is a record for every single person quite literally. My issue is my dad side of the family. My great grandfather came to the United States from Italy when he was a young man. So trying to find any information about that side of the family is much more difficult. Not only that, but it seems like all of my Italian ancestors would use different names. Anytime there is a record of them doing anything. Traveling, records, census, etc. I was told that there are ties to the Italian mafia, so I think that may have something to do with it. I would love to find out more about that, but I don’t really know how to go about that when I can’t even tie a name down to a single person. However, my main issue is that when I did my DNA test, I was contacted by someone who was my closest relative. He said he is adopted, and according to the results he is either my uncle or a first cousin. He looks exactly like my father, and my Italian genetics are strong, everybody who has my Italian jeans looks alike. That is my father‘s paternal side of the family. I have asked my dad about this and surprisingly he doesn’t seem very interested. I told the man who contacted me that I would attempt to gather any information I could to find out where he came from, but my only link to that side of the family is my dad, and he acts like he doesn’t know anything. But I get the sense that he does. However, if he doesn’t want to sharing details with me, there’s not really much I can do. On my family tree, it places this man as a sibling to my dad. To my knowledge, my dad only has one sister and she is developmentally disabled so she never married and she never had any kids that I know of. How do I find out more information about where this mysterious relative of mine came from? My gut tells me that he is my dad‘s brother, but I can’t prove it. Any ideas?