Íth

Íth was the son of Breogan and brother of Bile, Fuad and Breaga. Íth was also the uncle of Míl Espáine, eponym of the Milesian people.

Íth was the father of Lugaid, who was married to Fial, daughter of Míl.

When Íth climbed the tower that his father had built in Brigantia, he could see a green island across the sea. Íth became so obsessed that he wanted to visit this green isle (Ireland). Íth went to Ireland and investigated the land with his followers.

There, he encountered the three kings who were all brothers; each one was married to a daughter of Ernmas. The brothers were the sons of Cermait, while the three sisters were the Sovereignty of Ireland. The three Danann kings were suspicious that Íth was conspiring to invade their land, particularly when Íth attempted to advise them. The three kings murdered Íth and some of Íth's followers. The survivors brought Íth's body back to Spain.

It was Íth's death that would lead to the Milesian invasion upon Ireland. The sons of Míl vowed to avenge their great-uncle's death.