While trying to find a link with Samuel Vance b. c1813 to Thomas Vance and Katherine Richard, the following was found in Tennessee Tidbits, 1778-1914, Volume 4 By Marjorie Hood Fischer at: http://books.google.com/books?id=Cyri5kfMVSQC&lpg=PA468&...
Died before 4 May 1840 when Richard Tenpenny was appointed Administrator, with J.C. Martin & Joseph Ramsey as security.(Can TN, Co Ct Min 1/473)On 4 July 1842 Samuel Vance was appointed guardian of Katherine, Mary Ann, Thomas, Richard, and James and (blank) Vance, the minor heirs of John Vance decd. Isaac W. Elledge and Joseph Ramsey were security. (Ibid B/73). The mother of the minors, Katherine Vance, objected to a guardian settlement made 5 June 1848. (Ibid 370). On 2 February 1852 Thomas Vance Jr. was appointed guardian to James Vance and Daniel Vance, Minor heirs of John Vance Deceased, with Samuel Vance, James Peyton & Jessee Richards as security. [It is not certain that this is the same John Vance] (ibid C/128).
I have seen John Vance & Samuel Vance as sons of Thomas Vance and Katherine Richard, but no direct links to tie them together...however the mention of Richard Tenpenny ties this to Katherine (Tenpenny) Vance, wife of John, and mother referred to of minor heirs.
In addition Isaac W. Elledge is the brother-in-law of Samuel Vance through wife Sarah Ann Elledge...and the additional name of Jessee Richard, make the family ties a bit too coincidental. Further research may shed better light, but it appears there was a direct tie between John Vance & Samuel Vance that adds credence to the assumption they were descendents of Thomas Vance and Katherine Richard.