Bearnghal, son of Gedhe Ollghothach, was a legendary High King of Ireland. The office of High King of Ireland (Irish: Ard Rí Érenn) was in origin a pseudohistorial construct of the eighth century that placed a king of all Ireland atop the fragmented pyramid of kingship that actually existed at that time. ...
The High Kingship of Ireland was a pseudohistorical construct of the eighth century AD, a projection into the distant past of a political entity that did not become reality until the ninth century. ... Signature page from the Annals of the Four Masters Entry for A.D. 432 The Annals of the Four Masters or the Annals of the Kingdom of Ireland by the Four Masters are a chronicle of medieval Irish history. ... Seathrún Céitinn, known in English as Geoffrey Keating, was a 17th century Irish clergyman, poet and historian. ... Ailill or Oilioll, son of Slanoll, was a legendary High King of Ireland of the 12th century BC. For other personages called Ailill, see Ailill. ...
After the death of Ollamh Fodhla, four of his sons ruled in succession over the land; then the throne went to Bearnghal, grandson of Ollamh Fodhla through his son Gedhe Ollghothach.
Gedhe was a warlike monarch; and there was continual fighting during his rule which led to a great scarcity of food throughout Ireland.
After ruling for twelve years Bearnghal was slain by his cousin Oilioll (son of Slanoll, the second reigning son of Ollamh Fodhla) in a CIVIL WAR that was supported by SIRNA OF THE HOUSE OF HEREMON, who was paving the way for his own takeover of the throne.