Uí Fiachrach

The Uí Fiachrach were a dynasty who originated in, and whose descendants later ruled, the coicead or fifth of  (a western  of ) at different times from the mid-first millennium onwards. They claimed descent from, an older half-brother of or. Fiachrae and his two full brothers, and, were the collective ancestors of the  dynasty that eventually became the new name of the province.

The other two dynasties within the Connachta were the - descendants of Brion - and the  - descendants of Ailill. The latter sank into obscurity at an early stage but both the Uí Fiachrach and Ui Briuin and their many sub-s featured prominently in the history of Connacht for one thousand years. In the 12th century, an Ui Briuin descendant,, became.

The Uí Fiachrach separated into two distinct branches, situated widely apart from each other. The settled in the kingdom of  and established themselves as its new ruling dynasty. The were based along the  in what is now part of  and. It appears that they once constituted a single overkingdom, and ruled or took tribute from the older tribes and nations situated between Aidhne and, 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 or ; to the west by   and the  ; and to the south by  (later the, later still the 's of . 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.

Up to the mid-12th century its lords were the family of, who were overturned and exiled by their kinsmen, the. This family remained rulers of the territory until the land confiscations of the late 1690s and early 1700s; the senior line died out in 1784.

Uí Fiachrach Muaidhe covered all of what is now county Sligo and much of north and central. 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, ). Brian, Melaghlin Carragh, Connor Oge, and Murtogh mac Connor O Dubhda fought at the 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 of. For this reason they were no longer referred to as Kings, but as (Chieftain) of Uí Fiachrach Muaidhe.

Here the family became sponsors of the Clan Mac Fhir Bhisigh, a family of herditary historians and judges. Because of this, the O Dubhda is singular in having his inauguration ceremony preserved in an old book, the. Written between 1397 and 1418 at 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. Bearers of the name are still found scattered through Sligo, Mayo and Galway.

Genealogy of the early Uí Fiachrach
Bold print indicates Kings of Connacht Eochaid Mugmedon =Mongfind      + Cairenn |                 |     _________|_________         |     |        |        |         |     |        |        |         |     Brion  Fiachrae  Ailill     Niall, died c.450. |                  (Ui Néill) _________|________________________    |                 |             |      |                 |             |     Amalgaid          Nath Í       Macc Ercae |   ___________________|_____________________    |           |                           |    |           |                           |     Fiachnae    Ailill Molt, d.482. Echu |                                      |    |                                       |   (Uí Fiachrach Muaidhe)           (Uí Fiachrach Aidhne)

Uí Fiachrach Muaidhe

Fiachnae |   |    Elgach |   |    Maeldubh |   |    Tipraite |   |    Dunchad Muirisci |   |_______________________________________________    |                              |                |      |                              |                |    Indrechtach, d.707. mac Dunchad     Ailill |                             |                |     |                              |                |    Ailill Medraige, d.764. Tipraite, d.719 Cathal |                             |    |                              |    Cathal, d.816. Donn Cothaid, d.787.

Uí Fiachrach Aidhne

Echu |   |    Eogan |   |    Conall |   |____________    |          |    |          |      Gabran     Goibnenn, fl. 538. |   |    Cobthach |   |    Colman, d. 622. |   |_____________________________________    |                                   |    |                                   |    Laidgnen/Loingsech, d. 655. Guaire Aidne, d. 663. |   ____________________________________|    |                                   |            |                                   |          Muirchertach Nar, d.668. Artgal |                                         |                                                                                  Fergal Aidne, d. 696.