Nancy, It is very rare to see some of the names you have listed here. My ggrandmother was Luiza Littrell on my grandfather's side. She was married to James L. Nichols.
I also, have in my line Cobb. Nancy A. Cobb was married to Alexander (Buddy) Orr. Does this fit in with anything you have. I have quite a bit of information on ORR/Cobb line bur next to nothing on the Littrell/Nichols side.