Hello Carole, I'm not having too much luck but, I did come across this, in the 1880 Census. Could this be your folks? I'll keep searching, Yvonne.

John P. Avery WM Age 32 born TN TN TN
Catharine Avery Wife WF Age 29 TN TN TN
Pauline A Avery DAU WF Age 12 TN TN TN
Nancy Morton Niece WF Age 13 TN TN TN