Hi! I actually met Vennata in Italy in 1960 when I visited Alife with my parents. My dad told me that she was my grandfather Costantino's sister. Her married surname was Melillo and her son Andrea actually came to America around the same time as my dad and lived in Shirley, LI, NY. Salvatore was the uncle in New Castle who called for my dad, Antonio, in 1923. It is quite possible that my grandfather and your great-grandfather were married to sisters? My dad kept in touch with his cousin Sisto Martello. They lived in Long Island as well. He and his wife died, and we have lost contact. At one time a John Isabella, I believe that his dad was Tommaso Isabella visited us. His family lived in Queens, NY.
Yes, I am related to Isabella Carting. The business was my dad's (Antonio) and my brother Constantino(changed the spelling a bit!) and his son John Isabella run it!
I don't have a family tree, and just one picture of my grandparents, (Costantino and Maria), but I will have to ask my kids how to attach it!
By the way, I have come across a cartoonist by the name of Tony Isabella who does work for Marvel. I know he has to be related. In addition, I actually have some cousins in Montreal, so we are all over.