The S. may stand for Seneca from what I've been told by family members.
He was supposedly born in New York around 1844 to unknown parents.In later years, he evidently told some family members that he was born close to Schenectady but no other information was ever given by him.
I have extensive records of his life after 1870 when he turned up in Dayton,Montgomery County,Ohio where he met and married Sarah Belle Ware in December 1877.
They are my paternal great grandparents.I have been searching for many years for his birth and his parents names with no luck.