Irish mythology Irish mythology is the body of myths indigenous to the island of Ireland. It was originally Oral tradition, passed down orally in the Prehistoric Ireland, prehistoric era. In the History of Ireland (795–1169), early medieval era, myths were ...

Fiacha Cennfinnán (modern spelling: Fiacha Ceannfhionnán meaning "Fiacha f thelittle white head"), son of Starn, son of Rudraige, of the

Fir Bolg In medieval Irish myth, the Fir Bolg (also spelt Firbolg and Fir Bholg) are the fourth group of people to settle in Ireland. They are descended from the Muintir Nemid, an earlier group who abandoned Ireland and went to different parts of Europe. ...

, became

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 ...

when he overthrew his great-uncle Sengann. He ruled for five years, until he was overthrown by Rinnal, son of

Genann Genann Mac Dala (modern spelling: Geanann), son of Dela (Dela was a descendant of Starn, son of Nemed), of the Fir Bolg was a legendary joint High King of Ireland with his brother Gann mac Dela, Gann, succeeding their brother Rudraige mac Dela, Rud ...

. The Milesian king Fíachu Findoilches is sometimes known by the same name.

Primary sources

* ''

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 ...

'' *

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 ...

Seathrún Céitinn 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 Érinn'' {{DEFAULTSORT:Fiacha Cennfinnan Legendary High Kings of Ireland Fir Bolg