Fergal Aidne mac Artgaile (died 696)all dates per The Chronology of the Irish Annals, Daniel P. McCarthy was a King of Connacht from the Ui Fiachrach Aidhne branch of the Connachta. He was the grandson of Guaire Aidne mac Colmáin, the hero of many Irish sagas, and was the last member of this branch to hold the overlordship of Connacht.Francis J.Byrne, Irish Kings and High-Kings, Table 18
The kinglists have misplaced his reign by placing it after Cellach mac RogallaigBook of Leinster, Section 30 and Laud Synchronims but the annals such as the Annals of Tigernach give him a reign after Dúnchad Muirisci mac Tipraite in the years 683–696. Nothing is recorded of his reign however.
The lines descended from Fergal (the Cenel Guairi) included the O'Heynes and O'Clearys while the O’Shaughnessys descended from his brother .
Notes
See also Kings of Connacht
References
Annals of Tigernach Francis J.Byrne, Irish Kings and High-Kings Book of Leinster,Section 30 Laud Synchronisms The Chronology of the Irish Annals, Daniel P. McCarthy Clans and Families of Ireland and Scotland, C. Thomas Cairney, Ph.D.,
External links CELT: Corpus of Electronic Texts at University College Cork