While I'm not a Descendant of Solomon,I do have an interest in his family. My Great-Great Grandfather was Rufus Brantley Hood - His first wife was Catherine Summy. Also, Rufus's sister (Mary E.) apparently married a Summy (though I don't know which one) and was living in Solomon's household in the 1870 Polk County census along with two son's by her first marriage (Isaac Jackson Horton and James Robert Horton).
Did your George ever live in Cherokee County Texas? If so, do you know when they settled there? Catherine and Rufus moved to Cherokee County in 1850/1.
As far as a burial place for Solomon, my guess would be inthe Ocoee Baptist Cemetery (Aka Four Mile Cemetery) in Benton, Polk County, Tennessee. He and Ruth were members of that church as early as 1836.