Why the Ancient Sources Cannot Be Read as Neutral Witnesses

The trouble with the ancient evidence is not that it is silent but that nearly all of it comes from people with reasons to describe the druids in a particular way. Julius Caesar's account in the Gallic Wars, the single most quoted ancient source, was written by a general justifying the conquest of the very societies he was describing, and other Greek and Roman authors writing about druids were, without exception, outsiders reporting at second hand about a priesthood belonging to peoples their own states were fighting, trading with, or had already subdued, a pattern of authorship that historians treat as grounds for real caution about any specific practice those sources attribute to druids rather than as neutral ethnography.

The later Irish and Welsh material that modern Druidry sometimes points to instead is not a more reliable substitute. It was written down centuries after the conversion to Christianity, by Christian scribes, in societies where druids as a functioning religious class no longer existed, so what survives is folklore and literary memory rather than a continuous native record. No documented chain connects either body of evidence to the eighteenth century figures, Iolo Morganwg among them, who founded the modern movement, which is the specific finding that has led most contemporary Druid orders to describe themselves openly as a revival built from admiration, archaeology and invention rather than as an unbroken continuation of the historical Iron Age priesthood.