Hi BJ, After posting my first response I ran across Ansel's name for the first time. The ME Gen Web page for Waldo county just posted records for the cemeteries in Freedom and these Bradstreets are buried in the Smithton cemetery.
Ansel b. about 1862 m. Augusta Barlow. Ansel was probably grandson of Simon and Eunice (Fuller) Bradstreet who lived in Freedom. Eunice, as a new widow, was enumerated in 1850 census with several children including four sons (Abraham, Seth, Arley, and Frederick) all of whom could be Ansel's father but the most likely one is the oldest, Abraham.
Simon Bradstreet was b. about 1808. If he was a grandson of John b. 1748, he was not s/o Eben Hale and probably not the son of young Moses or Aaron, so that leaves Thomas, Nathaniel, or John b.1779. Thomas wrote a letter supporting a request for his father's revolutionary war pension and in it he indicated that all of the above sons were living in the 1830s. Thomas was living in Albion at that time.
I have quite a bit on the Bradstreets, mostly on my line, Eben(ezer) Hale Bradstreet. Please contact me directly if you would like to compare notes.