I have an uncle, David Lewellyn Lyon. We also had a Harmon Downing Lyon, as well as a James Lyon Fitzsimmons, but cannot learn ancestry. DLL lived l900-+-l98_, Hamon D. Lyon lived until l863 during CW; James Lyon Fitz. lived prior to l850, PA, we think. Descended from John FITZSIMMONS, EARLY, EARLY, EARLY IN AMERICAN HISTORY. Too many ties not to be related.