Found this info in the US GENWEB archives about the daughter of John and Hannah Flinn Leatherwood.
"The next son of Levi and Nancy was Samuel Houston Roberts carrying part
of his Uncle Houston's name in early life married Mary Letherwood
(Leatherwood) a daughter of John Sr. and Hannah Leatherwood with whom he
lived until her death in the year (?)."
http://files.usgwarchives.net/tn/sevier/history/letters/roberts06.txt
