Muiredach Bolgrach, son of

Siomón Brecc 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 ...

, 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 took power after killing his predecessor, and his father's killer, Dui Finn, ruled for 13 months or four years depending on the source consulted, and was then killed by Dui's son

Énna Derg Énna Derg, son of Dui Finn, was, according to medieval Irish legend and historical tradition, a High King of Ireland, who took power after killing his predecessor, and his father's killer, Muiredach Bolgrach. He was called ''derg'', red, because ...

. 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 ...

'' synchronises his reign with that of

Artaxerxes I of Persia Artaxerxes I (, ; ) was the fifth King of Kings of the Achaemenid Empire, from 465 to December 424 BC. He was the third son of Xerxes I. In Greek sources he is also surnamed "Long-handed" ( ''Makrókheir''; ), allegedly because his ri ...

(465–424 BC). The chronology of

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 ...

's ''Foras Feasa ar Éirinn'' dates his reign to 674–670 BC, that of 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 ...

'' to 894–893 BC.''

'
M4306-4307
/ref> His son was Fíachu Tolgrach.

References

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