His WWI draft registration card, filed 5 June 1917, records Amos Thornsberry, age 25, born 26 Feb 1892 in Fannin, Ky, married, supporting a wife and 4 children, physical description medium height and build, blue eyes and light brown hair.

1920 census of Elliott Co., Ky, Newcomb precinct, enumerated 17 Jan, lists on p. 9B as family #148/149:
Thornberry, Amous, 27, farmer; May, 30, wife; Virgil, son, 8; Vertia, dau, 7; Gladis, dau, 6; James, son, 4; Haden, son, 1 11/12; George, son, 1/12. All born Ky Ky Ky.