Considering that the only real written records of "Celtic" culture, outside of archeology,come to us care of the Roman Commentaters where does this deep knowledge of ancient customs etc. come from anyway, since most of the Roman material concentrates on how barbaric they are as opposed to civilised in the Roman manner. For most of it I only see educated guess work, or stuff thats just made up to fit the frame. I of course could wrong, references most welcome.

White supremicist Celts, sounds to me like somebody's yanking somebodies chain.