Thank you for the info Barbara. Do you see anything that might lead you to believe that this Thomas Brittain marries an Elizabeth Carswell?
An interesting thing that I am showing in my tree is:
Thomas Brittain m Elizabeth Carswell and has a daughter named Louisa.
Louisa marries Zachariah Carswell who is the son of Joseph Waighstill Carswell (1834-1894) and Elizabeth Stacy.
I find it interesting that Thomas has a brother named Waistell/Waighstill (1845-1924) and an in law named Waighstill (1834-1894) also. I wonder if that was just a common name in that area or was someone named after someone. Also, this kind of leads me to believe that this Thomas Brittain is the Thomas Brittain who marries Elizabeth Carswell. Of course I am new to this and still sorting everything out so I may be completely off base.