The sons of Milesius, the ancestors of the modern Irish, are said to be some of the earliest settlers of Ireland. There is evidence that two or three waves of colonization had already reached the island from origins unknown. The Tuatha De Dannan, who were skilled in magic, descended on Ireland in a cloud of mist not long before the arrival of the Milesians and rendered the land invisible to keep the Milesians from reaching shore. After numerous battles and skirmishes, the Milesians banished the Tuatha De Dannan underground through the Caves of Kesh (or Keash). However, when the Milesians suffered famine and disease, they formed a treaty with the Tuatha De Dannan who arose as spirits, or The Sidhe
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