I was largely responding to this:
There are scads of references to druids bearing arms in the
Táin and the
Remscéla, and a few references in Classical texts. Cathbad the druid, the putative father of King Chonchobar a prominent figure in the life of Cúchulainn. The druid Uiscias wielded the talismanic sword Freagarthach, once the sword of Nuada Airgetlám, king of the Tuatha dé Dannan.
There are the Classical references in Diodorus Siculus and Strabo to druids with swords striking sacrificial victims, which I'd be willing to shrug off, except for the evidence of Lindow Man and other bog bodies.
Also suggestive are burials like the "
Deal Warrior," in the British Museum, and about to be included in one of the new Exhibit halls.
There's the reference in Pliny to druids gathering mistletoe with a golden sickle on the sixth night of the lunar cycle, followed by a ritual sacrifice of two bulls. There are some problems with his descriptions, but Lindow Man had grains of mistletoe pollen in his stomach, possibly part of his ritual last meal, a simple grain and seed cake that seems to have been part of a larger ritual.
Lindow Man is a potential clue; clearly aristocratic, and clearly bearing the signs of regular weapons training in terms of skeletal-muscle development, but no indication that he had engaged in manual labor. There's some question as to whether he was an experienced horseman, and I don't think it's really been settled.
He appears to have been ritually killed in a method associated with druidic sacrifice, as in applied to those of the druid caste, and overseen by those of the druid caste. He may have been a volunteer selected by virtue of a lottery involving the oat cake he ate; the remnants in his stomach suggest it was deliberately scorched on one section.
Was he merely an aristocratic warrior, or was he a member of the druid/filidh caste? I think it's worth asking the question, though I'm not quite convinced by Dr. Anne Ross's exceedingly specific chronology and assertions. I don't think we know enough to know what he did in life, though I do believe he was ritually sacrificed.
Mind, I'm not any sort of religious anything; I generally consider scholarship my religion, but I am a Celticist, and I do frequently work with various Neo Pagan scholars particularly in terms of making sense of ritual references in Celtic texts.