Aillén Trechenn

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[Ir., triple-headed].

A triple-headed monster that came forth from its cave or mound at Cruachain, Co. Roscommon, on the eve of Samain [Halloween] to devastate Ireland. The creature harboured special aggression towards Emain Macha and the Hill of Tara. Amairgin (2) dispatched the beast.

Subjects: Religion.

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