I have no idea where in Hungary they originated, but I do know that my great grandfather, Mathias Rigo, did work in a coal mine but that was in West Virginia near Wheeling. I believe his mother's name was Sophie if that is any help. I wish I had more info for you, like I said, I really don't know much. It seems as if there are some similarities so far, maybe there is a connection. Oh, one thing that I am sure of is that the Rigo's started in Italy due to our relations that have the last name of Romangoli. I wish I knew more.