Hero Myths of the British Isles by Thomas Bulfinch

Among all the early literatures of Europe, there are two which, at exactly opposite corners of the continent, display most strikingly similar characteristics. These are the Greek and the Irish, and the legend of the Irish champion Cuchulain, which well illustrates the similarity of the literatures, bears so close a resemblance to the story of Achilles as to win for this hero the title of "the Irish Achilles. " Certainly in reckless courage, power of inspiring dread, sense of personal merit, and frankness of speech the Irish hero is fully equal to the mighty Greek.

Cuchulain was the nephew of King Conor of Ulster, son of his sister Dechtire, and it is said that his father was no mortal man, but the great god Lugh of the Long Hand. Cuchulain was brought up by King Conor himself, and even while he was still a boy his fame spread all over Ireland. His warlike deeds were those of a proved warrior, not of a child of nursery age; and by the time Cuchulain was seventeen he was without peer among the champions of Ulster.