Eric, i am not Lester, I do have a bit on the family. This link has been quite as most of us have changed email address several times.
The names you have for Williams sons, match, except for Grant, but I have one son with a different name. Last time the group traded notes (yes we are all cousins), we didn't have a Grant.Doesn't mean there isn't one, but...
Do you have any of birth or death dates for the family? Or, maybe I should ask, do you know who Issac or Elias married? Or any of the children listed, do you know who they married. I want to try to verify the connection, before we go to far.
Byron