Ballad of the Grey Prophet

A man in a grey cloak with a huge sword washes up on the shores of ancient Ireland. He wanders from place to place, and every time he speaks his words are filled with omen and gloom. And yet every word comes true. Soon he is known as the Wandering Man, or simply the Grey Prophet. He witnesses the sorrows of Deirdre, and the wars of Cuchulainn, and at last his death.