Rebecca Johnson or Elizabeth Johnson

I’m trying to find any info on Rebecca Johnson who married R.W.H. McMinn in, or around Cobb Co, Ga in the years of 1829-1832. Or her sister Elizabeth who married Felix McMinn in the same area, but year is unknown. R.W.H. was cousin with Kuykendalls in the N.W. Georgia has well. Family history has it that they were from the Long Hair Clan-Cherokee. The entire family moved into Alabama, Texas, Oklahoma, Missouri and Arkansas. Family surnames are: McMinn, Kuykendall, Johnson and Denman