More detail on the Coltharp family in Nashville, 1860 census:
Johnage 45 Elizabeth age 29 Johnage 18 Elizabethage 16 Robert age 15 George age 13 Lauraage 5 All born in TN.
I still have no idea how this family fits--descendants of Norvell, I assume. John may also be the John who is head of household in the Davidson 1840 census. I spent 1 1/2 very frustrating days at the TN archives in Nashville trying to find some clue to Norvell's descendants--found very little--no land records, brief inventory lists instead of will, etc. But marriage records indicate they were there for at least three generations. Guess we'll just have to wait for a knowledgeable descendant to come along!