1850 census of Letcher Co., Ky, district 1, enumerated 21 Aug, lists on p. 5 as family #30:
Isaac D. Stamper, 34, farmer, b. N Carolina; Polly, 25; Hiram, 9; William, 7; Stephen, 5; Milly, 3; Daniel B., 1; John, 14; Daugherty (male), 8. Polly Sexton, 9. Emily Pridemore, 20. Hatten Sexton, 18, farmer. All except Isaac born in Kentucky.

The preceding household is headed by Stephen Adams, age 34.

1860 census of Letcher Co., Ky, Whitesburg P.O., enumerated 16 July, lists on p. 70 as family #442:
Isaac D. Stamper, 43, farmer, b. NC; Mary, 35, b. Ky; Hiram, 19; Stephen, 17; Milley, 15; William, 12; Daniel B., 10; Rosanah, 9; Joseph E., 7; Mary, 4; Moses, 10/12. Manervy Sexton, 17; Jesse Stamper, 16. All children born in Kentucky.

The age for William seems odd. If it is the same person who was recorded as age 7 in the 1850 census, he has gone from falling between Hiram and Stephen in the birth order, to between Millie and Daniel.

1870 census of Letcher Co., Ky, precinct 3, Whitesburg P.O., enumerated 19 July, lists on p. 3 as family #14:
Stamper, Isaac, 53, farmer, b. NC; Mary, 45, b. Ky; Rosanah, 19; Joseph, 15; Mary, 12; Moses, 11; Martha, 7; Elizabeth, 5. All children born in Kentucky.