Uí Briuin and Uí Fiachrach
Eochaidh Mugmedon was king of Connacht at the end of the fourth century. In early historical times his offspring: separated into three dynasties --
Regional references from the Annals ( Regional Kings, i.e. rí or rex)
Fiachrach Aidhne
CS538 Goibhnenn son of Conall, King of Uí Fiacrach Aidhne 
U769.7 Comman Enaigh Dathe, Conchobur m. Cumascaich rex Aithne, mortui sunt. 
U772.9 Art m. Flaithniadh rex Aidhne iugulati sunt. 
U810.1 Anlon m. Concobair rex Aidhne moriuntur. 
c.820 Cleireach macCeadach O'Fiachrach, king of Fiachrach Aidne
c.1014 Maelruanaidh na Paidri Ó hEidhin, ancestor of the O'Heyne Chiefs of Uí Fiachrach Aidne
T1147.1 Gilla Mo Conne h-Úa Cathail, rí h-Úa Fiachrach Aidhne