Eochaid Apthach was a legendary High King of Ireland in the 9th or 10th century BC. His epithet means "fatal". Seathrún Céitinn says this is because there was plague during his one-year reign. 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. ... (10th century BC - 9th century BC - 8th century BC - other centuries) (900s BC - 890s BC - 880s BC - 870s BC - 860s BC - 850s BC - 840s BC - 830s BC - 820s BC - 810s BC - 800s BC - other decades) (2nd millennium BC - 1st millennium BC - 1st millennium AD) Events Kingdom of Kush (900 BC... (11th century BC - 10th century BC - 9th century BC - other centuries) (1000s BC - 990s BC - 980s BC - 970s BC - 960s BC - 950s BC - 940s BC - 930s BC - 920s BC - 910s BC - 900s BC - other decades) (3rd millennium BC - 2nd millennium BC - 1st millennium BC) Events Partition of the ancient Israelite... Seathrún Céitinn, known in English as Geoffrey Keating, was a 17th century Irish clergyman, poet and historian. ...

Breisrigh (or Bres, Breas), son of Art Imleach, was a legendary High King of Ireland in the 10th century BC. He defeated the Fomorians in several battles. ... 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. ...