I too descend from Martin and his wife through their daughter Lydia Collier Wells.
I recently went to Arkansas (Collier's Creek, Caddo area, Buttermilk Springs) and found the house that Martin's son built around 1848, based on the deed of the new owner. I also asked him about a cemetery, where Martin Collier and his wife were buried. I was told where it was and I found it, on private property, and the owner let me take pics of the small graveyard that is enclosed with square rocks that holds about 4-6 graves. Only Andrew Jackson Collier has a real headstone, but there are other graves there marked with big rocks.
I would interested in your stories and such if you would be kind enough to share.
Once I get the pictures downloaded, I will post the pics I took of the small graveyard. You can email me at firstname.lastname@example.org
if you choose to share info.
Joy Boutwell McNally