In the late 1960's I was a minister at the Unitarian church in Quincy, Mass where Adams is buried. His faith was not Deist. He was a Christian who did not accept the 3 Gods interpretation of the Trinity. Unitarian thought in the late 18th and early 19th century was explicitly Christian. It has only been since the 60's of this century that the Unitarian Universalist Association began to define itself as other than Christian.
Thank you. This was informative. I always wondered what the origin of the Unitarians that we see today was.