TEG would be in trouble if I did, JackB! No, mostly it just comes from knowing folks who knew these people . . .
The LDS church people has really done some work on genealogy! There is even a book about Dad's family that starts with the first guy who shows up from Great Britain. He has a Dutch name but there are at least some records of his arrival in colonial times. Then, they've sorted things out down to the Mormon families.
Problem there is that Dad's line didn't go that route. If I just follow back to Aunt Sis and my great grandfather Henry - it takes a "leap of faith" to find a connection. If these folks came off the Trail of Tears, it's what could have been expected. Dad's mother's family is almost more of mystery, if that's possible. I had a picture shown me of her father with a revolver strapped to his leg. Gun was nearly as big as that little Texan!
Mom's side it's easy enough to go back to Sylvia's father and her father-in-law for that matter - the patriarch of the Idaho pioneers. Then, because Mom has a famous Canadian pianist for a "cousin," I can follow Mom's father's family back to when they left the south of England. My maternal grandfather really seemed to want to remove himself from that family, however - I wonder if I should honor that. Famous cousin or not . . .
Steve