Fiatach Finn was a legendary High King of Ireland of the 1st century AD. The Dál Fiatach of Ulster are said to have been descended from him. 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. ... (1st century BC - 1st century - 2nd century - other centuries) The 1st century was that century which lasted from 1 to 99. ... For other places and things named Ulster, see Ulster (disambiguation). ...

Feradach Finnfechtnach, son of Crimthann Nia Náir, was a legendary High King of Ireland of the 1st century AD. He was said to have had two bulls horns on his head. ... 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. ... Fiacha Finnfolaidh, son of Feradach Finnfechtnach, was a legendary High King of Ireland of the 1st century AD. He was ovrthrown by either Cairbre Cinnchait or Éllim, king of Ulster, in a revolt of the subject peoples against the Milesian nobility. ...