I was at a library today that had a copy of the AR 1850 census with an everyname index.Looks like only one Colston family in all of AR, and looky here:
Mathew Colston 34 b GA Tabitha Colston 40 b GA Elizabeth 11 Marion 8 Virginia 5 MARTHA 3 Levi Timmens 17 Dwelling 36; Champagnolle Twp; Ouachita Co.
I would say this is the family of your Martha.And, I would follow Mathew and family through census records, that would give you migration path.Mathew should show up on 1840 census with wife and one very young female (Elizabeth) in his household.It would be interesting to find where they were in 1840.
With Mathew and Tabitha being born in GA, you have some credibility for Cherokee connections.I have a friend with early GA Cherokee lines.You might check GA 1820 census for any Colston family with male under 10 (Mathew would be about 4 years old in 1820), see how many there are.Do a little research on county where they are located.Using a search engine like http://www.google.comhttp://www.google.com -- type in Cherokee Georgia, up comes some interesting sites.Giving some background on Cherokees in North GA.There was a gold rush in GA, yes most people think of CA, NV and AK when you talk about gold rush, but it probably led to problems for the Cherokees.Anyway, you can pick up a little background and history on the people and might help with your research. Happy Hunting. (^_^)