If you are still active on line.....
Your Samuel Garner may be related to the Garner family I am also researching.
William Garner from Virginia
He had many children including Samuel Garner who went to Chatam, NC,
Richard Garner who went to Richland, SC and has a prominent family line including a much research Preslet "GrayWolf" Garner
Samuel Garner is one of the names listed late into to 1790s on Virginia tax records just like Richard Garner was actually living in SC.