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Uí Fidgenti

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Title: Uí Fidgenti  
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Uí Fidgenti

Uí Fidgenti
4th century–1178
Capital Brugh Ríogh (Dún Eochair Maigue)
Languages Irish
Religion Gaelic polytheism, Christianity
Government Clan / Corporate
Elected Chief
 -  fl. circa 340 AD Fiachu Fidgenid
 -  1178 independent princes
Historical era fl. Late Antiquity
 -  Established 4th century
 -  Disestablished 1178

The Uí Fidgenti, Fidgeinti, Fidgente, or Fidgeinte (/ ˈfjɛnti/ or /ˈfjɛntə/;[1] "descendents of, or of the tribe of, Fidgenti") were an early kingdom of northern Munster in Ireland, situated mostly in modern County Limerick, but extending into County Clare and County Tipperary, and possibly even County Kerry and County Cork, at maximum extents, which varied over time. They have been given various origins among both the early or proto-Eóganachta and among the Dáirine by different scholars working in a number of traditions, with no agreement ever reached or appearing reachable. It is entirely possible that the Uí Fidgenti were the product of a combination of lineages from both these royal kindreds, or alternatively of another origin entirely.

Closely related to the Uí Fidgenti were the Uí Liatháin, who claimed descent from the same 4th century AD dynast, Dáire Cerbba (Maine Munchaín), and who in the earliest sources, such as The Expulsion of the Déisi (incidentally),[2] are mentioned together with them.

They supposedly took their tribal name from their ancestor Fiachu Fidhgeinte, the second son of Dáire Cerbba, whom, it is believed, became the senior line of the Milesian race upon the death of Crimhthann in 379 a.d. As noted in the Book of Lecan, Fiacha received the designation because he constructed a wooden horse at the fair of Aenach Cholmain.

Ultimately, six hundred years after the time of Fiacha, the territories of the Ui Fidgheinte divided into two principal dynasties or septs, the Uí Chairpre Áebda and Uí Chonaill Gabra.[3][4][5][6] The latter were more often the stronger power.[4] By 1169, the Ui Chairpre had further divided into the Ui Chairpre and the Uí Dhonnabháin.,[7] though comparing the geneaologies set forth in Rawlin and the Book of Munster, the lines diverged with Cenn Faelad, four generations before Donovan (died 974), reflecting that specific family's alliance with the Danes of Limerick and Waterford.

Famous modern descendants of the Uí Chonaill Gabra include Michael Collins of the Ó Coileáin,[8] and possibly also the O'Connells of Derrynane.[9][10][11]

Size and extents

A variety of sources show that Uí Fidgenti was the most prominent of the non-(classical)-Eóganacht overkingdoms of medieval Munster, once the formerly powerful Corcu Loígde and distant Osraige are excluded as non-participating.[12]

Saint Patrick

Vita tripartita Sancti Patricii[13]

Saint Senan

Senán mac Geircinn

Uí Fiachrach Aidhne

The Annals first note the Uí Fidgenti in 645 (649) as allies of the celebrated king of Connacht, Guaire Aidne mac Colmáin, at the Battle of Carn Conaill. His dynasty, the Uí Fiachrach Aidhne, controlled much of the territory to the immediate north of the Uí Fidgenti. Byrne argues[14] the two kingdoms were in rivalry for control over several smaller tuaths, but other evidence suggests they were allied.[15] In the 8th century Lament of Crede, daughter of Guaire, the Ui Fidghente are noted as opponents of her father at the battle of Aine in 667.

Sites and finds

Dún Eochair (Maighe) was the great capital of the Uí Fidgenti,[4][16] described by Geoffrey Keating as having been one of the two great seats of the Dáirine and the legendary Cú Roí mac Dáire.[17] The earthworks remain and the fortress can be found next to the modern town of Bruree,[18] on the River Maigue. The name means "Fortress on the Brink of the Maigue", and the name of the town is anglicised from Brugh Riogh, meaning "Palace of Kings". Another common name for the site, but probably fanciful, is Lissoleem, thought to be from the name of Ailill Aulom,[18][19] a legendary king of the Deirgtine who is sometimes seated there in literature.

To the south of Brugh Riogh can be found Cnoc Samhna ("Hill of Samhain"),[20] also known as Ard na Ríoghraidhe ("Height of the Kingfolk"). Associated with Mongfind,[21] this may have been the Uí Fidgenti inauguration site.

The Ardagh Chalice was discovered in Uí Fidgenti territory, at Reerasta Rath in 1868.[22][23]

Eóganachta relationship

The Uí Fidgenti, despite the questions about their origins, had an excellent relationship, if peculiar, with the Eóganachta kings at Cashel. Theoretically unable to share in the Cashel kingship, they had the unique status of close foreign allies. Ólchobar mac Flainn may have been recognised King of Munster, but this is unlikely since he was not a descendant of Conall Corc, and he may in any case be confused with Ólchobar mac Duib-Indrecht.[24]

However, a curious passage in The Expulsion of the Déisi[25] names the Uí Fidgenti, including the Uí Liatháin, among the Three Eóganachta of Munster, the others being the Eóganacht Locha Léin and the Eóganacht Raithlind.[26] All three were of sufficient military and political standing to exchange hostages with the Cashel kings instead of simply giving them as would proper subjects, and the relationship was apparently terminable.[27]


The disintegration of the Uí Fidgenti commenced in 1178, when Domnall Mor O'Brien caused the Uí Chonaill and Uí Chairpri to flee as far as Eóganacht Locha Léin and others into County Kerry (AI). The O'Collins, the most powerful sept, would follow many of the O'Donovans some decades later,[28] but one or two smaller septs within the Ui Fidghente, notably the MacEnirys,[28] would remain in County Limerick for several centuries more as lords under the new Earls of Desmond. Important families which did not survive intact from the war waged by the O'Briens, and the subsequent incursion of the FitzGeralds, were Kenneally, Flannery, Tracey, Clerkin, and Ring. These septs scattered all over Munster.

The recurring conflict with the O'Briens had its most infamous event more than two centuries before, when Donnubán mac Cathail, progenitor of the O'Donovans, formed an anti-Dalcassian alliance with two other leaders, his father-in-law Ivar of Limerick, the Danish king of Limerick, and Máel Muad mac Brain, King of Munster. The result of this was the death of the elder brother of Brian Bóruma, Mahon, Mathgamain mac Cennétig, for his frequent attacks on Ui Fidghente. His death resulted in Brian Boru's subsequent revenge by defeating all three members of the alliance.[29] In the 10th century, the territory of the Ui Fidghente bordered those of Mahon (in Cashel) and of Brian Boru (in Thomond), and territorial conflicts were not uncommon.

The Danish connection of the Ui Fidghente was also a considerable factor in the decrease of their power. The Ui Fidghenete had allied with the Ui Imhar five generations before Donovan was slain in 977, and the O'Donovans continued to carry Danish-dominated names well past the death of Amlaíb (Olaf) Ua Donnubáinof in 1201. Having allied with the losing side of the Danish / Irish conflicts in the late 10th century, the O'Donovans of Ui Chairbre saw their influence wane during the next two centuries while they tried to stem the tide against more powerful forces.

It can be argued that the core of the Uí Chonaill Gabra, under the O'Collins, remained a powerful force in Munster for some period of time. The Annals of Inisfallen note that in 1177 there was "An expedition by Domnall Ua Donnchada (Donnell O'Donoghue) and Cuilén Ua Cuiléin (Colin O'Collins) against Machaire, and they took away many cows. Peace was afterwards made by the son of Mac Carthaig (MacCarthy) and by the Uí Briain (O'Briens)".[30] This suggests the Uí Chonaill Gabra commanded one of the largest forces in Munster at this time and that it was not until after sustained attacks from the FitzGeralds that they were forced to retire to Cork in the mid 13th century. The same Cuiléin Ua Cuiléin and many of the nobles of Uí Chonaill Gabra were slain in a battle with Domnall Mac Carthaig in 1189,[31] an unfortunate event which contributed to their weak resistance against the invading Cambro-Normans. Shortly thereafter, in 1201, Domnall Mac Carthaig brought a hosting into Uí Chairpri,where he was slain; one year later, the last king of Uí Chairpre mentioned in the annals Amlaíb Ua Donnubáin, was slain by William de Burgh and the sons of Domnall Mór Ua Briain in the year 1201 (AI). It is clear that the chiefs and territories of what were formerly the Ui-Fidghente (i.e. the Uí Chonaill Gabra and the Uí Chairpri) were under pressure after 1178, indicating they were still in their historical territory after the 1169 invasion of foreigners, and were caught in the crossfire between the MacCarthaigs, the O'Brians and the English foreigners. By the end of the 12th century, the Ui Fidghente territory was under extreme pressure from all sides, as the MacCarthaigs, O'Brians and the English foreigners (Fitzgerald, Fitzmaurice, DeBurgo) looked to the south and west to expand against the remnants of the Ui Fidghente, the Uí Chonaill Gabra and the Ui Chairpre, who were without formidable allies.

County Clare

Because of the later dominance of County Clare by the Dál gCais, the Uí Fidgenti septs there have proven difficult to trace and identify. A powerful branch of the Uí Chonaill Gabra known as the Uí Chormaic preserved their identity, from whom descend the O'Hehirs, but it is believed that other families were later wrongly classified as Dalcassian. Notable possibilities are the O'Deas and O'Quins of Uí Fearmaic[32] and the MacNamaras of Clann Cuilean.

Corcu Loígde

Evidence may or may not exist for long-term exchange between the Uí Fidgenti and Corcu Loígde. This appears to be a relic of the pre-Eóganachta political configuration of Munster, and may support the theory of (some) Uí Fidgenti origins among the Dáirine as cousins of the Corcu Loígde. There are a number of historical septs who may have their origins with one or the other, evident in collections of pedigrees as early as those found in Rawlinson B 502,[33] dating from 550 to 1130,[34] and as late as those collected by John O'Hart in the 19th century.[28]

An early O'Leary family are given an Uí Fidgenti (Uí Chonaill Gabra) pedigree,[35] but the Munster sept as a whole are generally regarded to belong to the Corcu Loígde.


  • AI635.1 The battle of Cúil Óchtair between the UÍ Fhidgeinte and the Araid.
  • AI649.2 Death of Crunnmael son of Aed, king of Uí Fhidgeinte.
  • AI683.1 Kl. Death of Donennach, king of Uí Fhidgeinte, and the mortality of the children. [AU —; AU 683, 684].
  • AI732.1 Kl. Death of Dub Indrecht son of Erc., king of Uí Fhidgeinte.
  • AI751.1 Kl. Death of Dub dá Bairenn son of Aed Rón, king of Uí Fhidgeinte.
  • AI762.2 Death of Flann son of Erc, king of Uí Fhidgeinte.
  • AI766.2 A defeat [was inflicted] by the Uí Fhidgeinte and by the Araid Cliach on Mael Dúin, son of Aed, in Brega, i.e. Énboth Breg.
  • AI774.4 Death of Cenn Faelad, king of Uí Fhidgeinte, and of Rechtabra, king of Corcu Bascinn.
  • AI786.2 Death of Scandlán son of Flann son of Erc, king of Uí Fhidgeinte.
  • AI834.8 Dúnadach son of Scannlán, king of Uí Fhidgeinte, won a battle against the heathens, in which many fell.
  • AI835.9 Death of Dúnadach son of Scannlán, king of Uí Fhidgente.
  • AI846.5 Niall son of Cenn Faelad, king of Uí Fhidgente, dies.
  • AI860.2 Aed son of Dub dá Bairenn, king of Uí Fhidgeinte, dies.
  • AI846.5 Niall son of Cenn Faelad, king of Uí Fhidgente, dies.
  • AI906.4 Ciarmac, king of Uí Fhidgente, dies.
  • AI962.4 Death of Scandlán grandson of Riacán, king of Uí Fhidgeinte.
  • AI972.3 The capture of Mathgamain son of Cennétig, king of Caisel. He was treacherously seized by Donnuban and handed over to the son of Bran in violation of the guarantee and despite the interdiction of the elders of Mumu, and he as put to death by Bran's son.
  • AI974.0 Death of Dhonnabhan mac Cathail, tigherna Ua Fidhgeinte.
  • AI977.3 A raid by Brian, son of Cennétig, on Uí Fhidgeinte, and he made a slaughter of foreigners therein.
  • AI982.4 Uainide son of Dhonnabhán, king of Uí Chairpri, died.
  • AI989.4 Congal son of Anrudán, king of Corcu Duibne, dies.
  • AI1177.3 Great warfare this year between Tuadmumu (Thomond) and Desmumu (Munster), and from Luimnech to Corcach and from Clár Doire Mór to Cnoc Brénainn was laid waste, both church and lay property. And the Uí Meic Caille and the Uí Liatháin came into the west of Ireland, and the Eóganacht Locha Léin came as far as Férdruim in Uí Echach, the Ciarraige Luachra into Tuadmumu, and the Uí Chonaill and Uí Chairpri as far as Eóganacht Locha Léin.
  • MCB1177.2 A great war broke out between Domhnall Mór Ó Briain and Diarmaid Mór Mac Carthaigh, and they laid waste from Limerick to Cork, and from Clár Doire Mhóir and Waterford to Cnoc Bréanainn, both church and lay property. The Uí Mac Caille fled southwards across the Lee into Uí Eachach, the Eóghanacht Locha Léin fled to Féardhruim in Uí Eachach, the Ciarraighe Luahra into Thomond, the Uí Chairbre, the Uí Chonaill, and the Uí Dhonnabháin into Eóghanacht Locha Léin, and to the country around Mangarta.


Based primarily on Rawlinson B 502:[36]

  Dáire Cerbba / Maine Munchaín
               |                   |                   |                   |                   |
               |                   |                   |                   |                   |
          Fidach Uí Liatháin Uí Fidgenti Uí Dedaid Uí Duach Argetrois
          |                          |
          |                          |
Crimthann mac Fidaig Mongfind = Eochaid Mugmedón = Cairenn
                                          |                  |
                                          |                  |
                                      Connachta Uí Néill



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Sites of interest

  • The Territory of Thomond discusses the extent of the Kingdom of Uí Fidgenti
  • Tuadmumu has maps and convenient Uí Fidgenti-related genealogies
  • Tribes & Territories of Mumhan
  • Tracys of the Eóganachta features a very detailed genealogy of the Uí Fidgenti, compiled and translated from numerous primary and secondary sources
  • South Irish R1b
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