Sétna Airt, son of Artrí, son of Éber, son of Ír, son of

Míl Espáine In Irish origin myths, Míl Espáine or Míl Espáne (later Latinization of names, Latinized as Milesius) is the mythical ancestor of the final inhabitants of Ireland, the "sons of Míl" or Milesians (Irish), Milesians, who represent the vast maj ...

, was, according to medieval Irish legend and historical tradition, a

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 ...

. He came to power after the death of the previous incumbent,

Rothechtaid mac Main Rothechtaid, son of Maen, son of Óengus Olmucaid, was, according to medieval Irish legend and historical tradition, a High King of Ireland. He came to power by killing the previous incumbent, his grandfather's killer Énna Airgdech, in the bat ...

, whom, according to one version of the story, he had killed in single combat at Cruachan, fighting to protect his son, Fíachu Fínscothach. He ruled for five years, until Fíachu, returning from exile, killed him at Cruachan.

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 ...

adds that Fíachu returned to Cruachan in a "black fleet", and 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 ...

'' says he was assisted in the killing of Sétna by the future High King Muinemón.''

'
M3842-3842
/ref> The chronology of Keating's ''Foras Feasa ar Éirinn'' dates his reign to 980–975 BC, that of the ''Annals of the Four Masters'' to 1358–1353 BC.

References

{{DEFAULTSORT:Setna Airt Legendary High Kings of Ireland