I think it might be a clue that I found those papers in a box in Vermont. How they got there, I don't know. You might research records of land ownership in Vermont, census info, pension info are all helpful. I used to live on Caswell Street in East Taunton, about 100 yards from a Caswell historical cemetery. That's what peaked my interest at the time. Good luck. Keep in touch and let me know how you make out.