アイルランド神話では、エラサ、エロサ[ 1 ] 、エリエル[ 2 ]、またはエラダ(現代の綴り:エラダ)はフォモール族の王であり、トゥアハ・デ・ダナーンのエリュとの間にブレスをもうけたほか、デルバエス、オグマ、エロス(マナナン・マク・リルの父リルの別名)、そして名前のわからない母との間にダグダをもうけた。[ 3 ] [ 4 ]彼を取り巻くイメージは、彼が太陽などの光や照明の源と関連付けられている可能性を示唆している。[ 5 ]
エラサは「金色の髪を持つ美しいミルトン風の闇の王子」と描写されている。彼はデルバエスの息子でフォモールの王であり、トゥアハ・デ・ダナーンの女性エリウとの間にブレスの父であった。 [ 6 ]彼は銀の船に乗って海を渡って彼女のもとにやって来た。彼自身は金色の髪をした若い男の姿で、金の服と5つの金のトルクを身につけていた。彼はマグ・トゥイレドの第二次戦闘に参加したフォモールの一人であった。
第二次マグ・トゥイレドの戦いの間、エラサは息子ダグダの魔法のハープ、ウアイトネ(時には「二つの花を咲かせる樫の木」を意味するドゥル・ダ・ブラ、時には「四角い音楽」を意味するコイア・セサル・チュインとも呼ばれる)を見守っていた。彼はユーモアのセンスと高潔な精神の持ち主だったと言われている。
エオチュ・ブレスのフォモール族の父とみなされているエラサ(エラダ)は、レボル・ガバラ・エレンによれば、ダグダ、オグマ、デルバエスという名の息子、そしてリル(マナナン・マク・リルの父)としても知られるエロスの父でもあった。これらのトゥアハ・デ・ダナーンの首長 の母は、オグマの母称「マク・エトリウ」に基づけば、ルグの母であるエトネであった可能性がある。エトネはフォモール族であったため、これは彼らが全員フォモール族であることを意味する。これはかなり混乱を招くが、2つのグループ間の戦いは実際には新世代の神々が旧世代の神々を追放することに関するものであると描写しているのかもしれない。
She told him that his father was Elatha, one of the Kings of the Fomorians; that he had come to her one time over a level sea in a great vessel that seemed to be of silver; that he himself had the appearance of a young man with yellow hair, his clothes decked with gold and five rings of gold around his neck. She had refused the love of all the young men of her own people, had given him her love and cried when he had left her.[1]
Before he left he had given her a ring from his own hand and had bade her give it only to the man whose finger it would fit. Eri brought out the ring and put it on the finger of Bres and it fit him well. She and Bres and some of their followers then set out of the land of the Fomorians. At long last they came to that faraway land. Elatha the local King saw the ring on Bres’ hand and asked him the whole story and said that Bres was his own son. Elatha then asked Bres what it was that drove him out of his own country and his own kingship. Bres answered truthfully: “Nothing drove me out but my own injustice and my own hardness; I took away their treasures from the people and their jewels and their food itself. And there were never taxes put on them before I was their King. And still I am come to look for fighting men that I may take Ireland by force”. Elatha listened but refused his aid, urging Bres to earn the kingship by justice. However, he also bade him go to the chief King of the Fomorians, Balar of the Evil Eye.[1]
These are the names that Elatha has gone by and where that name stems from.
Elathan is used incorrectly by Squire and Lady Gregory, as Elathan is the genitive case of Elatha and means 'of Elatha'.
According to Lady Gregory the etymology of Elatha is "art" or "knowledge" in the bardic sense.[7] The name Elathan could also mean "(he) of the art" the n is justified in this case. This could explain why Ogma (inventor of the ogham script) is son of Elatha(n) (bardic knowledge). Elatha is called "glory of weapons" and "a wolf of division against men of plunder" in the Lebor Gabála Érenn.[8]