Hello Lynn,
This reply comes many years after your initial post. John Belton was my 3rd great grandfather. His daughter Fanny married Edward Underwood in Canada and they moved to Michigan. My great grandmother Fanny Underwood married Christian Roese. They're son Frank Roese was my mothers father. I would be happy to share information and collaborate with you. I too am a little challenged researching the Beltons. I had put it aside for many years until recently and found this post on a google search.
Look forward to hearing your thoughts,
Sheryl Wildoner