I wonder, how many druids turned scribes would record any traditions. Granted, they had a written language before, but used oral transmission as a safeguard.
Seems likely. Even christian saints had druids in their retinue for things like divination.
I've only found a few videos of possible surviving druids preserving the culture, who look modern and not larping
If you're looking for modern living examples of ancient Irish paganism, look into fairy lore. There's all kinds of forms of worship and spells that are obviously inherited from prechristian beliefs.
For example, there's a very old spell for healing the leg of a horse which is preserved in Ireland, Germany and India.
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