Descendants of Isaac Turpin

I have recently heard from a descendant of Isaac Turpin, son of Martin Turpin and Elizabeth Russell. She is Lisa Brock of Clinton, Tennessee.  According to Lisa Brock, she is the daughter of Elmira Letisha Cagley, son of Lydia Alice Thacker (who married George Isaac Cagley), daughter of Sarah Clementine Turpin (who married Elias Bragg Thacker), daughter of Isaac Turpin. That makes Lisa the great-great granddaughter of Isaac. [The photo to the left of Sarah Clementine Turpin, daughter of Isaac Turpin, has been provided by Lisa Brock.]   Lisa reports: First, according to a court document, Isaac Turpin owned land that adjoined Amos Thacker in 1869.  It was located on Chestnut Ridge in the 15th district of Roane County, Tennessee. The second document I have is a marriage bond for Isaac's son, William H. who married Nancy Crawford in 1877 in Roane County, Tennessee. This marriage bond was signed by William Turpin and Isaac Turpin.