Donn

Donn — 'the Dark One' — appears in the Lebor Gabála Érenn as one of the sons of Míl Espáine, the legendary ancestors of the Gaels who invaded Ireland from Spain. During the invasion he insulted Ériu, the goddess who gave Ireland her name, and according to the Metrical Dindshenchas the druids of the Tuatha Dé Danann raised a magical storm that wrecked his ship. Donn drowned and was buried on a remote rocky island off the tip of the Beara Peninsula — a sea stack today called Bull Rock, pierced clean through by a natural tunnel, which the dindshenchas decrees shall forever after be known as Tech Duinn, the House of Donn.

Tech Duinn became, in Irish tradition, nothing less than the gathering-place of the dead. A ninth-century poem records Donn's dying instruction to his descendants: 'To me, to my house, you shall all come after your deaths.' Later texts describe the souls of sinners visiting Tech Duinn before continuing on to judgement, and the saga Togail Bruidne Dá Derga names Donn outright as 'king of the dead', whose otherworldly red horsemen ride 'the horses of Donn' across the sky. The rock's natural tunnel, through which the Atlantic surges and withdraws, gave physical form to the idea of a threshold between this world and the next.

Donn never entirely vanished from living folklore. In County Limerick, Donn Fírinne was said to dwell inside Cnoc Fírinne (Knockfierna) and to ride out as a phantom horseman on a white horse — thunder and lightning marked his passage, and gathering clouds meant he was brewing rain for the harvest. A parallel figure, Donn na Duimhche, 'Donn of the dunes', haunted the coast of County Clare. Over time 'Donn' became almost a generic title for any otherworldly lord of a hill or headland, a faint echo of the Milesian ancestor still waiting in his house in the western sea.