1880 census of Elliott Co., Ky, Martinsburg precinct, enumerated 7 June, lists on pp. 11-12 as family #86:
Thornberry, Louis A., 57, farmer, b. Ky N.C. Va; America M., 46, wife, b. Ky Va Va; Leander C., son, 28, b. Ky Ky Ky; Laban M., son, 21, b. Ky Ky Ky; John E., son, 19, b. Ky Ky Ky; Benj F. B., 13, b. Ohio Ky Ky; William G., 11, b. Ohio Ky Ky; Emery L., 2, son, b. Ky Ky Ky; Mary E., 6, granddau, b. Ky Ky Ky; George W., 4, grandson, b. Ky Ky Ky.

There are three other Thornberry families on this same page: Isaac age 31 with wife Mary S. age 24, James age 32 with wife Nancy age 32, and William age 25 with wife Rose age 20.