Rowan Co. birth records list an unnamed son born 8 Mar 1861 to A. J. McKinzie and Louisa Alfrey, both parents born in Fleming Co.

Rowan Co. marriage records list Andrew McKinsey, age 19, born Fleming Co., married Louisa Alfrey, age 18, born Fleming Co., on 29 Jun 1856.

1860 census of Rowan Co., Ky, lists as family #402 (between Adam Alfrey and Z. R. Johnson):
A. J. McKenzie, 24; Louisa, 22; Amandy E., 3; Wallace, 1. All born in Kentucky.

1870 census ...

1880 census of Rowan Co., Ky, Pearce Precinct, lists as family #177:
McKenzie, Andrew J., 43, enumerator; Louisa, 42, wife; Ellen, 23, dau; Andrew, 15, son; Minerva, 12, dau; Clarinda, 8, dau; Harrison, 10, son; James W., 5, son; Oscar, 2, son. All born Ky Ky Ky.

1900 census of Rowan Co., Ky, Pierce precinct, enumerated 1 June, lists on p. 1A-1B as family #9:
McKenzie, Louisa, 62, b. May 1848, widowed, mother of 11 children, 9 living, farmer; Amanda E., dau, 43, b. May 1857, widowed, mother of 2 children, 2 living, servant; Oscar, son, 21, b. Aug 1878, married 1 year, works at saw mill; Etta M., wife, 18/19 overwritten, b. (Oct?overwritten) 1881, wife, married 1 year, 0 children; Zacriel T., son, 19, b. Apr 1881, 19, married 1 year, teamster; Hathie M., wife, 15, b. July 1884, married 1 year; Sherman, grandson, 23, b. Mar 1877, single; Liza Jane, granddau, 4, b. July 1895; Alfrey, John, boarder, 69. b. Oct 1830, married 1 year, farm laborer. All born Ky/Ky/Ky.

(There is a 10 year inconsistency between the age and birthdate for Louisa, but both numbers are clear. The line for Etta is hard to read because the enumerator first entered the name and data for Zachary on that line and then overwrote it with Etta and her info. John Alfrey is Louisa’s brother, even though he is not so recorded in this census. I do not know who the parents of the two grandchildren are. I cannot find Sherman in the 1880 census.)

1910 census of Rowan Co., Ky, Farmers precinct, enumerated 26 April, lists on p. 7B as family #117/125:
McKenzie, Louisa, 70, widowed, mother of 11 children, 9 living, farm owner; Foster, Lizzie, 14, granddaughter, single. Both born Ky Ky Ky.