Divine blacksmith of the Tuatha Dé Danann, tutelary god of metal craftsmen. He forged the points of the weapons of Lug and his companions for the battle of Mag Tuired. He presided over a feast in the Underworld that made those who partake of it eternally young. His Welsh equivalent was Gofannon.
Goibniu was part of a triad of craftsman gods:he was a blacksmith, Luchta a metalworker and Creidne a bronze worker. Together they forged magic weapons (each crafting a different part) for Lug and the Tûatha Dé in the great conflict between them and the Fomoire, native demons who fought all invaders of Ireland. Goibniu is the most elaborate character of the triad. His weapons never missed their target and always killed. He added to these qualities the role of host of the feast of the Other World, where his magic brew conferred immortality. Diancecht, god of medicine, drew his power from a mixture of magic and herbal practices; he was both a doctor and a blacksmith. This is how he made for King Nûada an articulated silver arm to replace the one he had lost in battle. Diancecht had the power to heal by magic:he resuscitated the members of the Tûatha Dé Dànann by chanting incantations over a well in which the warriors who died in battle were plunged. Manannan was god of the sea, associated with a whole marine imagery his mantle resembled the ocean and he rode the waves. Also a magician (like his Welsh relative Mannawyddan), he helped the Tûatha Dé in their battles, notably by providing them with a boat which obeyed the thoughts of the one who maneuvered it, a horse which moved as well on sea as on land, and a sword, Fragarach (She who answers), able to pierce any armor. Manannan's magic pigs were a symbol of regeneration; they could be killed and eaten one day, and alive the next, ready to be slaughtered for another feast.