Acording to H.David Myatt's web site,,,,,your great-GrandMother is as follows :
397. Mary E. MYATT was born on Sep 8 1854 in Dickson Co, TN. She died on Feb 26 1935.
She was married to Cordell Myatt BROWN on Apr 14 1870
I don't know if this will help you or not.
Also,,,Here is some of the notes that I have on her Father "Kendrick Jr.",,,,:
Kendrick Jr farmed for thirty years,,,,,,he also engaged in the saw and grist mill business, and ran a Carding Machine for about Five years. He was postmaster at Burns for 12 years. He also was a Rail-Road Agent for about eight years of this time while as a postmaster. He also engaged in merchandising for a number of years and was burned out in 1897.My notes also show that he passed away in 1897 at Dickson Tn, at age 75.
Bonnie,,,I hope this info will help you out some what. Also,,,,Dora wall's Daughter lives in Nashville Tn. but I'm not sure what her name is, but she has her mom's info that she put together on the Myatt family and she may have a picture of your Great-GrandMother,,,as she also has a Portate of my Great-Great-GrandFather M.Will Myatt. If you go to just north of Bon Auqua Springs in Tenn (around the Bear-Creek Area),,,you can find my Cousin Harlin Dudley and he knows Dora Wall's Daughters name and where to find her. Also,,,,my GrandFather's sister-in-law just turned 100 years and lives in North side of Nashville. Her husband is Cecil L. Myatt ( brother to my GrandFather Ernest Maytt). Her name is Maggie Myatt. I have no Idea what her maiden name is though. But,,she may have some pictures of your Great-GrandMother too.