Battle of Moytirra II - The Sons of Tuireann

The preparations for war were to last for seven years and it was during this period that the following tale of adventure occurs:

In spite of the dethronement of Bress, the Fomors still claimed their annual tribute from the tribe of the goddess Danu, and sent their tax-gatherers, nine times nine in number, to Balor's Hill to collect it. But, while they waited for the gods to come to tender their submission and their subsidy, they saw a young man approaching them. He was riding upon Splendid Mane, the horse of Manannan Mac Lir, and was dressed in Manannan's breastplate and helmet, through which no weapon could wound their wearer, and he was armed with sword and shield and poisoned darts. Like to the setting sun , says the story, was the splendour of his countenance and his forehead, and they were not able to look in his face for the greatness of his splendour. And no wonder! for he was Lugh the Far-shooter, the new-come sungod of the Gaels. He fell upon the Fomorian tax-gatherers, killing all but nine of them, and these he only spared that they might go back to their kinsmen and tell how the gods had received them.

There was consternation in the under-sea country. Who can this terrible warrior be? asked Balor. I know, said Balor's wife; he must be the son of our daughter Ethniu; and I foretell that, since he has cast in his lot with his father's people, we shall never bear rule in Erin again.
The chiefs of the Fomors saw that this slaughter of their tax-gatherers signified that the Tuatha De Danann meant fighting. They held a council to debate on it. There came to it Elathan and Tethra and Indech, kings of the Fomors; Bress himself, and Balor of the stout blows; Cethlenn the crooked tooth, Balor's wife; Balor's twelve white-mouthed sons; and all the chief Fomorian warriors and druids.