Charlemagne as well grew concerned by reports of heresy in his new Pyrenees territories, and commissioned his own response to the Adoptionist teaching, spearheaded by his erudite court scholar Alcuin of York.Ginther, Westminster Handbook, 4. This Carolingian response developed in three regional councils called by the king in 792 (Regensburg), 795 (Frankfurt), and 799 (Aachen).
