Dui Finn, son of Sétna Innarraid

Sétna Innarraid

Sétna Innarraid , 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 years, before he was killed by Siomón Brecc, grandson of Nuadu Finn Fáil...

, was, according to medieval Irish legend and historical tradition, a High King of Ireland

High King of Ireland

The High Kings of Ireland were sometimes historical and sometimes legendary figures who had, or who are claimed to have had, lordship over the whole of Ireland. Medieval and early modern Irish literature portrays an almost unbroken sequence of High Kings, ruling from Tara over a hierarchy of...

. He took power after killing his predecessor, and his father's killer, Siomón Brecc. He ruled for ten years, before he was killed by Siomón's son Muiredach Bolgrach. The Lebor Gabála Érenn

Lebor Gabála Érenn

Lebor Gabála Érenn is the Middle Irish title of a loose collection of poems and prose narratives recounting the mythical origins and history of the Irish from the creation of the world down to the Middle Ages...

synchronises his reign with those of Xerxes I

Xerxes I of Persia

Xerxes I of Persia , Ḫšayāršā, ), also known as Xerxes the Great, was the fifth king of kings of the Achaemenid Empire.-Youth and rise to power:...

 (485–465 BC) and Artaxerxes I

Artaxerxes I of Persia

Artaxerxes I was the sixth king of kings of the Achaemenid Empire from 465 BCE to 424 BCE. He was the son of Xerxes I of Persia and Amestris, daughter of Otanes.*Artaxerxes I was the sixth king of kings of the Achaemenid Empire from 465 BCE to 424 BCE. He was the son of Xerxes I of Persia and...

 (465-424 BC) of Persia. The chronology of Geoffrey Keating

Geoffrey Keating

Seathrún Céitinn, known in English as Geoffrey Keating, was a 17th century Irish Roman Catholic priest, poet and historian. He was born in County Tipperary c. 1569, and died c. 1644...

's Foras Feasa ar Éirinn dates his reign to 679-674 BCBC, that of the Annals of the Four Masters

Annals of the Four Masters

The Annals of the Kingdom of Ireland or the Annals of the Four Masters are a chronicle of medieval Irish history...

to 904-894 BC.