What is "conle"

Conle, or Connla, is a legendary character in Irish Mythology. He was the Red son of the high king of Ireland Conn of the Hundred Battles. He was with his father on the hill of Usnech when he saw a beautiful woman, invisible to the rest of the company. She tempted him to go with her to the Plain of Delight and live forever, until Conn's druid Coran drove her off by singing, but not before she threw a magic apple at the boy.

A month later on the plain of Archommin she came again, and this time Conle jumped into a glass coracle with her, and they sailed off never to be seen again.