A Coincidence ?
I may have found Wesley B. Kerlin. In Abilene, Texas, of all places. Seemingly the family scout, the first to leave Mount Pleasant in the 1830′s for Louisville, he disappears about 1850- 1860.
A bricklayer who owned slaves in Kentucky, I find a Westby ( Wes B. ?) Kerlin, bricklayer, in Abilene, City Directory, 1870.