I am only related to this family through Samuel Puryear (born about 1694). I have heard the story about Desota Puryear but have never found any record of his life.
The first record that I have seen of a Puryear in America (Virginia) is in 1635. These Puryears came from England. They were of French Huguenot descent, having gone to England beginning about the time of the Norman Conquest (about 1100). I have also foundthat there were a number of French Huguenots who came to Virginia from France in about 1629. I do not know if there were any Puryears.
Samuel Puryear was born about 1694 in Virginia and died 1748 in Warwick County,Virginia. He married a lady named Elizabeth who was born about 1698 in Virginia and died about 1755 in Warwick County, Virginia. Their children were John Sr., Samuel,Peter, William, Robert, Hezekiah, Thomas, Elizabeth, and maybe James.
To the best of my knowledge these are the ancestors of every white Puryear now living in America.