Siomón Brecc ("the speckled, spotted, ornamented"), son of Áedan Glas, son of Nuadu Finn Fáil, was, according to medieval Irish legend and historical tradition, a High King of Ireland. He took power after killing the previous incumbent,

Sétna Innarraid Sétna Innarraid ("of wages, stipend, reward"), son of Bres Rí, was, according to medieval Irish legend and historical tradition, a High King of Ireland. He is said to have been the first Irish king to pay his soldiers. He ruled for twenty yea ...

, ruled for six years, and was killed by Sétna's son Dui Finn. The ''

Lebor Gabála Érenn ''Lebor Gabála Érenn'' (literally "The Book of the Taking of Ireland"), known in English as ''The Book of Invasions'', is a collection of poems and prose narratives in the Irish language intended to be a history of Ireland and the Irish fro ...

'' synchronises his reign with that of

Xerxes I of Persia Xerxes I ( peo, 𐎧𐏁𐎹𐎠𐎼𐏁𐎠 ; grc-gre, Ξέρξης ; – August 465 BC), commonly known as Xerxes the Great, was the fourth King of Kings of the Achaemenid Empire, ruling from 486 to 465 BC. He was the son and successor of D ...

(485–465 BC). The chronology of

Geoffrey Keating Geoffrey Keating ( ga, Seathrún Céitinn; c. 1569 – c. 1644) was a 17th-century historian. He was born in County Tipperary, Ireland, and is buried in Tubrid Graveyard in the parish of Ballylooby-Duhill. He became an Irish Catholic priest and a ...

's ''Foras Feasa ar Éirinn'' dates his reign to 685–679 BC, that of the ''

Annals of the Four Masters The ''Annals of the Kingdom of Ireland'' ( ga, Annála Ríoghachta Éireann) or the ''Annals of the Four Masters'' (''Annála na gCeithre Máistrí'') are chronicles of Middle Ages, medieval Irish history. The entries span from the Flood myt ...

'' to 910–904 BC.''

'
M4290-4296
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References

Legendary High Kings of Ireland {{Celt-myth-stub