Hello Jimmy,
I am also a 7th gen of Sarah Tyner & John Harris on my Mother's Father's side of the family. As well from Sarah the Mistress down I have 7 generations of Sarah Tyner's so it has been a fun confusing mess, then add in the Lewis first name and it gets crazy confusing.
I have managed to find a copy of John Haris' Last Will that I could actually read and he pretty much left everything to Sarah and her two sons. He did however leave the homestead and a little bit of land to Mildred, but at her passing it was to be returned to Sarah and her son's. I could not believe that when I read it, I had to read it two or three times just to make sure I actually read what I did.. my husband was like did you really just read what I think you did? And surely his wife knew about his mistress.. lol
Although, this is not the most strangest thing on my family tree, so it really was not a total surprise... Lol