I am strongly suspicious that he is a brother of My Gt Gt Grandfather Dr Mark Brown Sappington who died in Memphis in 1852. We know that "Susanna" was cared for in Dr Mark Brown Sappington's home in her declining years. She died in Memphis. Dr Mark Brown Sappington's father was Dr Roger Boyce Sappingtonwho was also in his sons care until his death in Memphis. Mark Brown was named for his grandfather of the same name.
It is my STRONG suspicion that SUSANNA's maiden name was Hickman, and that she was a daughter of Edwin Hickman a famous long hunter/surveyor who was killed by indians in Hickman cty, TN and for whom that county is named.
It would please me to know more about William H.!!I am forwarding your query and my responce to the Sappington forum.