According to the R. A. Stewart Macalister translation of Lebor Gabála Érenn, part 5, page 265, its says;
- Thereafter the princedom of Ulaid was sundered from Temair, and
- Eochu Buadach s. Dui took the kingship of Ireland—the father of Ugoine
- Mór, who was foster-son to Cimbaeth s. Finntan.[1]
Macalister says that it is an abstract from the Roll of the Kings from Oengus Olmucach to Cimbáeth, appended to the Second Redaction (R²). Macalister describes the text as an Emain Macha interpolation.[2] However, Macalister does not include Eochu Buadach as a High King in his main List of High Kings of Ireland.
If Eochu Buadach was a High King of Ireland for any period of time, his reign would have been near the end of the reign of Cimbáeth, and his reign ended in 661 BC, according to the Annals of the Four Masters timeline.
