Adoptionists
From BiblePortal Wikipedia
Charles Buck Theological Dictionary [1]
The followers of Felix of Urgil and Epiland of Toledo, who, towards the end of the eighth century, advanced the notion that Jesus Christ in his human nature is the Son of God, not by nature, but by adoption.
The Nuttall Encyclopedia [2]
Heretics who in the 8th century maintained that Christ was the son of God, not by birth, but by adoption, and as being one with Him in character and will.
