1900 census of Rowan Co., Ky, Morehead precinct, enumerated 13 June, lists on p. 12A as family #230:
Posten, William, 39, b. July 1860, farmer; Nancy, wife, 34, b. May 1866, married 22 years, mother of 8 children, 8 living; John D., son, 17, b. Dec 1882; Virgie, son, 14, b. Aug 1885; Willie, son, 11, b. Dec 1888; Ernest, son, 9, b. Mar 1891; Saml, son, 6, b. Jany 1894; Lucy M., dau, 3, b. Oct 1896; Flora, dau, 3/13, birthdate blank. All born Ky Ky Ky.

The combination of birthdate and number of years married seems improbable for Nancy; most likey one of them is wrong.

1910 census of Rowan Co., Ky, Morehead precinct, enumerated 18 May, lists on p. 21A as family #366/368:
Postin, William, 55, laborer at stone quarry; Nancy, wife, 45, first marriage for both, married 30 years, mother of 10 children, 9 living; Virgie, dau, 22; Ernie, son, 19; Samie, son, 16; Lucy, dau, 13; Flora, dau, 10; Arthur, son, 7; Pansy, dau, 4. All born Ky Ky Ky.

Note that the son Virgie from 1900 is now a daughter.