I have information on Meriday's wife's ancestors. Unfortunately, I can find nothing on M.C. Roberts' ancestors.
My grandmother is M.C.'s grand daughter. She is one of 4 surviving Children of William Andrew Roberts and Mary. E. Carrico. (I think it's 4 surviving. I know she has one brother and one sister alive. I'm not sure about her other brother)
You may feel free to contact me if you wish to share information! :)