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Uí Fiachrach

uí briúin and uí fiachrach, ui fiachrach aidhne
The Uí Fiachrach Irish pronunciation: iː ˈfʲiəxrəx were a dynasty who originated in, and whose descendants later ruled, the coicead or fifth of Connacht a western province of Ireland at different times from the mid-first millennium onwards They claimed descent from Fiachrae, an older half-brother of Niall Noigiallach or Niall of the Nine Hostages Fiachrae and his two full brothers, Brion and Ailill, were the collective ancestors of the Connachta dynasty that eventually became the new name of the province Their mother was Mongfind


  • 1 History
  • 2 Genealogy of the early Uí Fiachrach
  • 3 Uí Fiachrach Muaidhe
  • 4 Uí Fiachrach Aidhne
  • 5 Sources


The other two dynasties within the Connachta were the Uí Briúin – descendants of Brion – and the Uí nAilello – descendants of Ailill The latter sank into obscurity at an early stage but both the Uí Fiachrach and Ui Briuin and their many sub-septs featured prominently in the history of Connacht for one thousand years In the 12th century, an Ui Briuin descendant, Ruaidri mac Tairrdelbach Ua Conchobair, became High King of Ireland

The Uí Fiachrach separated into two distinct branches, situated widely apart from each other The Ui Fiachrach Aidhne settled in the kingdom of Aidhne and established themselves as its new ruling dynasty The Uí Fiachrach Muaidhe were based along the River Moy in what is now part of County Mayo and County Sligo It appears that they once constituted a single overkingdom, and ruled or took tribute from the older tribes and nations situated between Aidhne and Muaide, but lost their grip on power by the early 8th century leaving them confined to their own strict territory

Uí Fiachrach Aidhne was bounded on the north and east by the powerful independent kingdom of Hy-Many or Ui Maine; to the west by Lough Lurgan Galway Bay and the Corco Mo Druad Corcomroe; and to the south by Déisi Tuisceart later the Dál gCais, later still the O'Brian's of Thomond The territorial gains made by the Uí Fiachrach were lost and the kingdom seems to have reverted to something of its original size for its subsequent history

For eight hundred years up to the mid-12th century its kings were from theCenel Guire the Clan O'Cleary Their kinsmen Clan O'Shaughnessy and Clan O'Hynes remained rulers of the territory until the land confiscations of the late 1690s and early 18th century

Uí Fiachrach Muaidhe covered all of what is now county Sligo and much of north and central County Mayo In 982 Aedh ua Dubhda Aedh grandson of Dubhda, King of Uí Fiachrach Muaidhe, died "an untroubled death" He was the first of his dynasty to use the surname O Dubhda anglicised to O'Dowd, Dowd Brian, Melaghlin Carragh, Connor Oge, and Murtogh mac Connor O Dubhda fought at the Second Battle of Athenry in 1316, only Brian surviving However, by the 14th century their power was much reduced, as was their territory which now almost entirely consisted of the barony of Tireragh For this reason they were no longer referred to as Kings, but as Taoiseach Chieftain of Uí Fiachrach Muaidhe

Here the family became sponsors of the Clan Mac Fhir Bhisigh, a family of hereditary historians and judges Because of this, the O Dubhda is singular in having his inauguration ceremony preserved in an old book, the Great Book of Lecan Written between 1397 and 1418 at Enniscrone in Tireagh, it was commissioned by Tadhg Riabhach O Dubhda

A later Tadgh O Dubhda, Tadhg Buí, became Taoiseach in 1595 In 1601 he led the men of Uí Fiachrach south to Kinsale, never to return A tradition states that "he survived the battle and settled in Co Kerry, where his family later became known as Doody" The last true O Dubhda of Uí Fiachrach was Dathi Og, patron and lord of Dubhaltach MacFhirbhisigh Bearers of the name are still found scattered through Sligo, Mayo and Galway

Genealogy of the early Uí Fiachrachedit

Bold print indicates Kings of Connacht

Eochaid Mugmedon =Mongfind + Cairenn | | _________|_________ | | | | | | | | | Brion Fiachrae Ailill Niall, died c450 | Ui Néill _________|________________________ | | | | | | Amalgaid Nath Í Macc Ercae | ___________________|_____________________ | | | | | | Fiachnae Ailill Molt, d482 Echu | | | | Uí Fiachrach Muaidhe Uí Fiachrach Aidhne

Uí Fiachrach Muaidheedit

Main article: Uí Fiachrach Muaidhe Fiachnae | | Elgach | | Maeldubh | | Tipraite | | Dunchad Muirisci | |_______________________________________________ | | | | | | Indrechtach, d707 mac Dunchad Ailill | | | | | | Ailill Medraige, d764 Tipraite, d719 Cathal | | | | Cathal, d816 Donn Cothaid mac Cathail, d787

Uí Fiachrach Aidhneedit

Main article: Uí Fiachrach Aidhne Echu | | Eogan | | Conall | |____________ | | | | Gabran Goibnenn, fl 538 | | Cobthach | | Colman, d 622 | |_____________________________________ | | | | Laidgnen/Loingsech, d 655 Guaire Aidne, d 663 | ____________________________________| | | | | Muirchertach Nar, d668 Artgal | | Fergal Aidne, d 696


  • Byrne, Francis John 1973 Irish Kings and High Kings Dublin
  • MacFhirbhisigh, Dubhaltach; O Muraile, Nollaig, editor 2004 Leabhar Genealach The Great Book of Irish Genealogies Dublin: DeBurca Alternate names by which it may be referenced include Leabhar Mor nGenealach, and Leabhar Mor na nGenealach
  • http://wwwfatherdowdnet/dowdstuff/dowdclanhtm
  • https://newsyahoocom/s/nm/20060117/sc_nm/science_ireland_dc

ui fiachrach, ui fiachrach aidhne, ui fiachrach history, uí briúin and uí fiachrach

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Uí Fiachrach

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    Uí Fiachrach beatiful post thanks!


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