I have some information on Sargent Major's descendants. I descend from Samuel Keys Sr. And Mary Champe (Champ ). Have you seen the 3 volume book set "Virginia Soldiers & Sailors of 1776". It is in volume of 2. It talks of John Champe & it names his heirs & their spouses & if deceased it names grandchildren for their heirs. It is very detailed. Also, there is a book called "John Champe the Soldier and The man written by Ida Mae Judy of which I own a copy. It is very detailed. In it Sargent Major John Champe's father is named and his two wives Elizabeth Seawell and Sarah Dewitt. The sargents father had children by both wives. Send me your email and I can send you copies via email attachments & or in pdf files if you would like to read it.
Michael Allan Devlin nee (McMaster). I descend from the Champes through my mother Kathleen Ann Coffelt. I have copies of almost all available sources to prove my linage. I'm very close to joining the S.A.R. also. Just need to get state issued birth records for my mom & I. Everything else they have already for proof of my linage.