Hi Margaret:
Have you found your Gilchrist ancestors yet? I'm a descendant of Jennie Bahn, who married Archibald McNeill. Also, of course, a descendant of Margaret Gilchrist and John Smith, and so am also interested in those lines, but know nothing about them. I've been following the McNeill information, though. I've just come from NC where I took photos of the McNeill/McKay cemetery which was relocated a couple of years ago from it's place at the old homestead to a church graveyard.
Look forward to hearing from you.