The Conmaicne were a people of early Ireland, perhaps related to the Laigin, who dispersed to various parts of Ireland. They settled in Connacht and Longford, giving their name to several Conmaicne territories. T. F. O'Rahilly's assertion the Conmaicne were non-Goidelic is not widely accepted.

Etymology

Their name originates from a mythical ancestor known as Conmac(c), meaning "hound-son" (con, prefix form of n-stem cú hound; mac, son). Conmac(c) descended from Fergus mac Róich and Queen Medb of Connacht. However, Walsh stated "Conmac son of Fergus is a genealogical fiction". The word Conmaicne means "progeny of Conmac" (-ne, a progeny). The name in Old Irish spelling contains m (without a following h) and c (or more etymologically, cc), thus Old Irish Conmac(c) and Conmaic(c)ne, but in Modern Irish spelling contains mh (with unetymological h as a sign of lenition) and single c, thus Conmhac and Conmhaicne).

Branches

Branches of the Conmaicne dispersed to various places. The Diocese of Ardagh was established in 1111 as the see for east Connacht. Fourteen years later, at the Synod of Kells-Mellifont, its area was reduced to the territory of the Conmaicne Rein and Conmaicne Angalie, south county Leitrim and all county Longford. The diocese was commonly called "the Diocese of the Conmaicne".

Septs

Known Septs in south County Leitrim were:

People

John O'Donovan wrote:

<blockquote style=" background:#F4F0EC; padding:1em; border:1px solid DarkSeaGreen;"> The chief families of the Conmacians were the O'Fearralls, princes and lords of Annaly, or Longford; the Mac Rannalls, a name anglicised to Reynolds, who were Lords of Conmaincee of Moy-Rein and Muintir-Eolais, in Leitrim; the Mac Keoghes, who were chiefs in Galway, and also in Lenister; the MacShanleys; O'Rodaghans; MacDorchys; O'Mulveys; O'Morans, and O'Mannings, chiefs and clans in various parts of Longford, Leitrim, and Roscommon. Notables descended from the Conmhaicne include [Cruimthear Mac Carthaigh](https://bliptext.com/articles/cruimthear-mac-carthaigh), [St. Jarlath](https://bliptext.com/articles/iarlaithe-mac-loga) of [Tuam](https://bliptext.com/articles/tuam) and some abbots of [Clonmacnoise](https://bliptext.com/articles/clonmacnoise).

Secondary sources