I saw your message on the Alvey forum and will send you a message but also saw this one when checking out the Buckman's this evening.
In Mary Louise Donnelly's 1996 Buckman book, she lists on page 66 Clement Everman Buckman(#253) born abt 1823 in Union Co, KY, son of John N Buckman. At Sacred Heart in St Vincent, KY on 4/25/1843 he married Sevilla Ann Shanksb. 1824, dau of Thomas Shanks.This agrees with my records and the Sacred Heart records where their children were baptized. I also have Servilla as the sister to Rosella B Shanks who married 1, Benjamin Joseph Bright 2, Nathaniel Floyd Alvey and 3, Washington Henry Perry.Besides Rosella and Servilla, there were 7 other children that I am aware of maybe more.