Hello! I would be happy to hear about Jacob and Barbara - I am related through Rachel Secrest who married Goodwin Harris. I am a member of the DAR and all I know about Jacob was that he supplied food for the troops, and is thus in their encyclopedia as a patriot. I do have him on the tax records in Monroe county Tennessee in 1836, it looks like he went with the Harris family.
I know nothing of his family or who Rachel's siblings might be.