I'd love to try and help you. I am a member of the Nipmuc tribe, my great grandparents are from the Thompson CT and Dudley MA area. I have extensive info on them and perhaps we can work together to help you sort out things. Please email me at watchcrow@aol.com with as much info as possible, and perhaps a scan or photo of the letter from your ancestor.

Aquene (Peace),
Cheryl Watching Crow