The Robert William Gambles of Des Moines, IA

I have family tree back to David Gamble who supplied feed for the horses in the Revolutionary War, although some details are missing. Visit my web page at http://robert-gamble.com/ It has some of the family history that I have. I would like to fill in missing peaces and research the first Gambles back to their native countries. Any information would be appreciated. My wife, Maryann Boldt Gamble is interested in Boldt family, and Potts from Atchison County, Kansas. Also Adair family from Adams County, Iowa.