http://randidavenport.com/wp-content/uploads/2014/04/TheNewKent_Han... (page 12) points out that Joseph Martin + Susannah Chiles is incorrect as parents (I have disconnected). They also note that Martha is not known in any of the (large and documented) Martin landowning families, and that indeed that would not fit as wife of a small landowner like Benge. They suggest a Joseph Martin & his first wife Ann, of the Paint Clan.
https://books.google.com/books?id=f9AeCAAAQBAJ&pg=PT129&lpg...
Shawnee Heritage V By Don Greene # 253 has no parents for her.
http://www.genealogy.com/forum/general/topics/ai/28004/ seems to be saying Thomas Benge Sr (1710 - 1750) had two wives who have been conflated -
1. ? Mary? A Cherokee
2. Martha Martin, daughter of Joseph
Thomas Benge in the Albermarle County, VA deed records: one on Deed Book 5, page 276, 1771; and another in Deed Book 7, page 339, 1778.
.It appears then that Thomas Benge the Sr had 2 wives for Mary benge was arrested for theft 1744 and nearest to Thomas Benge 1748.
There are listings for Thomas Benge in the Albermarle County, VA deed records: one on Deed Book 5, page 276, 1771; and another in Deed Book 7, page 339, 1778. Martha Martin's father, Thomas Benge Sr.'s second wife, probated 1761 Albermarle County, VA census. Also look at the land deed in Washington County, VA for Joseph Martin, Oct. 19, 1795.
Susannah Lewis through two of their daughters, Sarah "Sally" and Susannah.the statements that their brother,"King David" Benge, was a quarter Cherokee through his grandmother, David Benge, died March 3, 1854, at the age of ninety-four in Clay County, Kentucky.
Here are some the problems that you face. Thomas Benge Jr.'s first marriage was to a Cherokee woman, It was not until he was near death, in 1854, that he openly acknowledged his Cherokee ancestry. It was Thomas Benge's father, Thomas Benge Sr., whose first marriage was to a Cherokee woman, name unknown. His second wife was Martha Martin, daughter of Captain Joseph Martin