Four branches of the
Ciarraige were known to be located in
Connacht.
Ciarraige Óic Bethra were located in what was then the kingdom of
Aidhne (now south
County Galway), where they were one of the three peoples living in Aidhne prior to the arrival of the
Uí Fiachrach in the 6th century. Ciarraige Aí,
Ciarraige Airtig and
Ciarraighe Locha na nÁirne, were located further north, adjacent to each other along the east
County Mayo/west-central
County Roscommon area. They were thought to have once formed a single over-kingdom which was broken up by the rise of the
Uí Briúin in the 8th and 9th centuries. In 2000,
Nollaig Ó Muraíle wrote of them as follows (p. 165): "The most notable of the latter are Ciarraige Aí, also called Ciarraige Maige Aí, who obviously derive their designation from the great central plain of Roscommon, Mag nAí, in which the ancient 'capital' of Connacht, Cruachu, stood.
Their settlement in contiguity to such a significant royal site must surely bespeak their possessing a considerable status at some stage just over the historical horizon. They first appear in the annals towards the close of the eighth century when, in 796, the
Annals of Ulster record the death of Duinechaid ua Daire, whom it describes as 'dux Ciarraide'; this is expanded by the Four Masters to 'tighearna Ciarraighe Aí' and the latter also tells of the death in the same year of Fogartach mac Cathail who is termed 'tighearna Maighe Aí' ... The title used by the Four Masters ('lord of Mag nAí') is indicative of the struggle for control of this crucial territory between the Ciarraige of the area and the rising dynastic power of the
Uí Briúin." ==Annalistic references==