Hi there cousin!
John is my great-great-great Grandfather.
I was able to find out a bit more about Mary (Polly) Wright and Henry Carmain, but for me the trail ends there. I've discovered Mary's parents Oakley Wright and Nancy Baker..but that's as far as I can get.
I also don't know anything about Henry Carmain's parents.
Were you able to find anything?
ps. I would message you, but my free membership was up and I guess they don't let you send private messages to people.