From of invasions: The Conquest of Nemed, The Conquest of The Fir Bolg, The Conquest of The Sons of Mil and The Conquest of The Tuatha De Danann

Now Ireland was waste thirty years after the plague-burial of Partholon?s people, till Nemed son of Agnoman son of Pamp son of Tai son of Ser son of Sru son of Esru son of Brament son of Aitecht son of Magog, etc., of the Greeks of Scythia, reached it. Now this is the account of Nemed. He came from Scythia westward, a-rowing the Caspian sea, till he reached in his wandering the great Northern Ocean. Thirty-four ships were his number, and thirty in each ship. While they were thus wandering, there appeared to them a golden tower on the sea close by them. Thus it was: when the sea was in ebb the tower appeared above it, and when it flowed it rose above the tower. Nemed went with his people towards it for greed of the gold. From the greatness of their covetousness for they did not perceive the sea filling around them, so that the eddy took their ships from them all but a few, and their crews were drowned, except those of them whom Nemed and his children rescued by dint of rowing. A year and half were they after that wandering on the sea, till they reached Ireland. They remain in it.