courseyrebecca on Family Tree Circles

My mother's maiden name is Lanham. Her father was Kenneth Lanham. He was born in 1932 and died at an early age of 1959. I'm searching for information related to his death, since it was at such an early age. My grandmother has passed away, and with her the knowledge of the circumstances surrounding the death. We are from Breckinridge County, Kentucky, but from my research the Lanhams came mostly from the Owensboro, Daviess County area of Kentucky. I never met any family members from the Lanham side, which is sad to me. I just wonder why there was a split.

I have a bare-boned family tree I've created on Ancestry.com, but I'm wanting to delve deeper into the lives of my ancestors. Of especial interest is my 6th great grandmother on my mother's side of the family; her name is Anne Floating Cloud (Vest?). From a quick research, this is the theory; Ann is the daughter of William Turner Vest and Lucretia Lucy Alford. Apparently, Ann was half-Cherokee, one of her parents was of French descent and the other was Cherokee. I believe William Turner Vest was Native American, as he lived in Powhatan, Virginia. William was born in 1735 and around that time (according to Wikipedia) the land there was being settled by the French, but previously was inhabited by Native American tribes. Powhatan was named after Pocahontas' father...just an interesting tidbit, I thought.
Ann was married to Phillip Williams, who was supposedly a quarter Cherokee. I need to print all of this out as I'm just going by memory right now.
This is the lineage I've traced back to Moses Vest, if the Vests are in fact relatives of Ann Floating Cloud. Moses would be my 10th great grandfather and lived between 1650 and 1735.
Moses Vest (1650-1735)
John Valentine Vest (1679-1735)
John Daniel Vest (1705-1765)
William Tunwell Vest (1735-1812)
Anne Floating Cloud Vest (1754-1840)
Thomas Williams (1781-?)
Phillip Williams (1814-1888)
Joseph A. Williams (1853-1902)
Elsie Roberts (1879-?)
Alma M. Roberts (my great grandmother) (1911-2000)
Anita Mae Hanks (my grandmother) (1934-2006)
Roberta Lanham Payne (1952 - current) my mother)
Rebecca Coursey (me)(1978-current)
If anyone has any additional information about Anne or Phillip Williams, I'd appreciate it.