Jas. C. Thomas/Sarah J. Eason TN - AR

I am searching for info on my g.g.g. grandparents Crislendon Thomas & Jane Eason. Those were the names listed on the death certificate of their daughter, however, because of an 1880 census I found, I believe that their names may have been Jas.(not sure what "Jas." stands for) C. Thomas and Sarah J. Eason. The "C" middle initial of Jas. could be Crislendon and the "J" middle initial of Sarah could be Jane. And one daughter listed on the census could be my g.g. grandmother Ella Cornelia Thomas. The dates, ages, and place would match what I have. If the family on the 1880 census of Clay County, AR is my family then it list several other children, the census is as follows:
Jas. C. Thomas - 53 y.o. - b. KY
Sarah J. Thomas (wife) 50 y.o. - b. TN
1. John N. Thomas (son) 30 y.o. - b. AR
2. Jas. A. Thomas (son) 27 y.o. - b. AR
3. Milana Thomas (dau) 24 y.o. - b. AR
4. Richand C. Thomas (son) 17 y.o. - b. AR
5. Ella C. Thomas (dau) 15 y.o. - b. AR
6. William J. Thomas (son) 12 y.o. - b. AR
7. Catalina J. Thomas (dau) 7 y.o. - b. AR
8. James M. Thomas (son) 6 y.o. - b. ARIf you have any further info on this family I would appreciate hearing from you. I am interested in ANY kind of info, but especially more info on Jas. & Sarah or Crislendon and Jane. Thanks for your time.
Carol