I havebeen searching for him (my gr grandpa) for over a year. His son,John William Simpsn,M.D attended U of PA med sch 1839-40. John William married Catherine Feagan, Fauquier co. VA 1844. They moved to TN 1848.I have complete data since 1848. There were an awful lot of Samuel Simpsons. I am 94 and need help. Can any one help?