I have what may be new info on the two Peter Smiths. There is a UEL claim for Peter Smith Jr where he explains that there were two Peter Smiths in the regiment. They are not related but to distinguish between them one was called Sr and one Jr. The Sr married Muchmore. Jr is the line I descend from. I can provide more a link to the UEL petition if you like. There are other petitions from them as well and also petitions from children who would refer to themselves as children or Sr or Jr which helps to trace the families.