Have you found the great grandmother you're searching for? I read one of your post where you were searching for Christopher Walker. I have a many times great grandfather who's name was Christopher Walker Threlkeld, I suspect your Christopher Walker is the same man as my Christopher Walker Threlkeld. My grandfather married "Mary", unknown native American name, granddaughter of Kocoum and Pocahontas. Is she your grandmother?
I have several surnames I am searching for in Maine, but I am also interested in learning more about the Penobscot. I have a great grandmother (about 4 or 5 generations back) and I am interested in anything I can find. Thanks!