UPDATE: Per DNA testing, it now seems certain that Allen Davidson and his son Archer Vaughan Davidson in Charlotte Co., VA were NOT related to Archer A. Davidson and Baker W. Davidson in Charlotte Co., VA. Also, Archer A. Davidson was a BROTHER to Baker W. Davidson and also to William W. Davidson (their parents were Baker Davidson and Elizabeth "Betsy" Womack). Archer A. Davidson was almost certainly named for Archer Womack, while Archer Vaughan Davidson was almost certainly named for the man in Charlotte Co., VA who was named Archer Vaughan.