Children of James Edson and Ms. Hancock

Their children were Luther, Achsah, Lovina, James, Abijah, Phebe, Mary and Joseph, all born between 1780 and 1803.

If you are a descendant of one of these children, did you ever wonder where their birthdates came from? I am, and I do. In 1969, with the publication of the two volumn Edson books, they were not named and no dates were given. Immediately after that publication their names and dates were known. Why? What came to the surface in that time that changed the known facts? If you have any ideas, please share them, as I have not found this new source yet, and I really want to know. Paul