Lia Fáil (Stone of Destiny) is said to have been brought to Ireland by the mythical race known as the Tuatha Dé Danann who defeated the original inhabitants of Ireland the Fir Bolg and took their seat of power on the Hill of Tara.
It was one of four treasures brought by the Tuatha Dé Danann and used as the inauguration stone for the High Kings of Ireland