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Eachtra

[I] Adventure. A class of tales in mythology usually connected with a mortal’s journey to the Otherworld. The eachtra became very popular in Irish literature in the fifteenth to seventeenth centuries.

Eagle of Gwern Abwy

[W] One of the oldest living creatures.

Easal

[I] King of the Golden Pillars who befriended the sons of Tuireann and gave them seven magic pigs that, when killed and eaten at the nightly feasts, were found alive the next day. Anyone eating of their flesh was never afflicted with disease.

Eber

[I] Though several people bear the name Eber, such as Eber Scot, son of Esru, son of Goidel, son of Scota, the more famous is Eber Finn. He was a son of Milesius who quarrelled with his brothers over the division of Ireland. He attacked his brother Eremon but was slain by him.

Edeirnion

[W] North Wales.

Ederyrn

[W] Son of Nudd and brother of Gwyn. He appears in the Red Book stories such as “Culhwch and Olwen,” “Dream of Rhonabwy,” and “Geraint, son of Erbin.” He is a warrior of Arthur’s and slays three giants. A catalogue of Welsh saints actually lists him as a bard, and his name seems to have survived near Holyhead (Anglesey) at Bodedyrn.

Efnisien

[W] Half brother of Bran, Branwen, and Manawydan, the children of Llyr. Son of Eurosswyd and Penardun. He always creates hostility, while his brother Nisien is a peacemaker. Efnisien features in the tragic tale of Branwen’s marriage to Matholwch of Ireland.

Efrawc

[W] Father of Peredur.

Eiddig

[W] Used as the name for any jealous husband in medieval Welsh love poetry.

Eidoel

[W] A secret prison in Glini.

Éire

[I] The goddess who gave her name to Ireland. She became the wife of Mac Gréine, son of Ogma. When the Milesians landed in