Ethriel, son of Íriel Fáid, according to medieval Irish legends and historical traditions, succeeded his father as

High King of Ireland High King of Ireland ( ) was a royal title in Gaelic Ireland held by those who had, or who are claimed to have had, lordship over all of Ireland. The title was held by historical kings and was later sometimes assigned anachronously or to leg ...

. During his reign he cleared six plains. He ruled for twenty years, until he was killed in the Battle of Rairiu by

Conmáel Conmáel, son of Éber Finn, according to medieval Irish legend and historical traditions, became High King of Ireland when he killed Ethriel, son of Íriel Fáid, in the Battle of Rairiu. He was the first Milesian High King to have been born ...

in revenge for his father

Éber Finn Éber Finn (modern spelling: Éibhear Fionn), son of Míl Espáine, was, according to medieval Irish legend and historical tradition, a High King of Ireland and one of the founders of the Milesian lineage, to which medieval genealogists traced al ...

, who had been killed by Ethriel's grandfather

Érimón Érimón (Modern ), commonly Anglicised as Heremon, son of Míl Espáine (and great-grandson of Breoghan, king of Celtic Galicia), according to medieval Irish legends and historical traditions, was one of the chieftains who took part in the ...

. He was the last of the chieftains who arrived in the invasion of the sons of Míl to rule Ireland. The ''

Lebor Gabála Érenn ''Lebor Gabála Érenn'' (literally "The Book of Ireland's Taking"; Modern Irish spelling: ''Leabhar Gabhála Éireann'', known in English as ''The Book of Invasions'') is a collection of poems and prose narratives in the Irish language inten ...

'' says that during his reign Tautanes, king of

Assyria Assyria (Neo-Assyrian cuneiform: , ''māt Aššur'') was a major ancient Mesopotamian civilization that existed as a city-state from the 21st century BC to the 14th century BC and eventually expanded into an empire from the 14th century BC t ...

, died (1182 BC according to

Jerome Jerome (; ; ; – 30 September 420), also known as Jerome of Stridon, was an early Christian presbyter, priest, Confessor of the Faith, confessor, theologian, translator, and historian; he is commonly known as Saint Jerome. He is best known ...

's '' Chronicon''), as did

Hector In Greek mythology, Hector (; , ) was a Trojan prince, a hero and the greatest warrior for Troy during the Trojan War. He is a major character in Homer's ''Iliad'', where he leads the Trojans and their allies in the defense of Troy, killing c ...

and

Achilles In Greek mythology, Achilles ( ) or Achilleus () was a hero of the Trojan War who was known as being the greatest of all the Greek warriors. The central character in Homer's ''Iliad'', he was the son of the Nereids, Nereid Thetis and Peleus, ...

(the

Trojan War The Trojan War was a legendary conflict in Greek mythology that took place around the twelfth or thirteenth century BC. The war was waged by the Achaeans (Homer), Achaeans (Ancient Greece, Greeks) against the city of Troy after Paris (mytho ...

is usually dated to the 13th century BC), and

Samson SAMSON (Software for Adaptive Modeling and Simulation Of Nanosystems) is a computer software platform for molecular design being developed bOneAngstromand previously by the NANO-D group at the French Institute for Research in Computer Science an ...

was king of the

Tribe of Dan The Tribe of Dan (, "Judge") was one of the twelve tribes of Israel, according to the Torah. According to the Hebrew Bible, the tribe initially settled in the hill lands bordering Tribe of Ephraim, Ephraim and Tribe of Benjamin, Benjamin on the ...

in ancient Israel.

Geoffrey Keating Geoffrey Keating (; – ) was an Irish historian. He was born in County Tipperary, Ireland, and is buried in Tubrid Graveyard in the parish of Ballylooby-Duhill. He became a Catholic priest and a poet. Biography It was generally believed unt ...

dates his reign from 1259 to 1239 BC, the ''

Annals of the Four Masters The ''Annals of the Kingdom of Ireland'' () or the ''Annals of the Four Masters'' () are chronicles of Middle Ages, medieval Irish history. The entries span from the Genesis flood narrative, Deluge, dated as 2,242 Anno Mundi, years after crea ...

'' from 1671 to 1651 BC.John O'Donovan (ed. & trans.), ''Annala Rioghachta Éireann: Annals of the kingdom of Ireland by the Four Masters'', Dublin, 1848-1851
Vol. 1 p. 37-39
/ref>

References

Legendary High Kings of Ireland Monarchs killed in action {{Celt-myth-stub