From Akashic Records
King of Bregia, son of King Ugaine and Cessair, brother of Laoghaire Lorc.
He pretended to be ill and when his brother came to visit him he stabbed him and Laohaire's son Ailill, killing them bother and taking Lioghaire's kingdom of Leinster. He forced Ailill's young son, Labraid Loiseach, to swallow parts of the hearts of his father and grandfather, as a result of which the boy lost the power of speech and was thereafter known as Maon.
He was killed by Labraid(Maon) who returned when he reached manhood to avenge his father and grandfather. Covac and his superiors were lured into an iron chamber and roasted to death when fires were lit all around it.