(Sorry, I accidentally posted the previous response under the wrong ID, "oldnate" instead of my correct ID).
I am already a member of that same Lewallen My Family group, and have been for many years. (The group was originally created back in the 1990's, then closed in 2001, and then re-opened by new moderator/owner last September.
I have posted my query with them as well (at least, in the earlier incarnation of the group), and no one has ever been able to connect my Andrew Lewallen (b. ca. 1829) with the other Lewallens of Scott County.
I appreciate you taking the time to reply,