Gentlemen, You are surely sticklers for documentation. I'm working on some, I've just run into a wall. While I was stationed in Saudi Arabia in the AIr Force, another Keith Henthorn, a college professor at Nottingham Trent University found me and was intrigued that there was another Keith Henthorn. During my conversations with him, he relayed the story of the Henthorns in England, and specifically, John and James, the predecessors of virtually all Henthorns in America. He's the one who informed me that they went to Ireland to find work and then moved to the USA. After I reponded the other day, I tried to contact Dr. Henthorn at Nottingham University, but the email was sent back as undeliverable. I will keep trying, but now you know about as much as I do.