Usnach

These three stories are called: The Tragedy of the Children of Lir; The Tragedy of the Children of Tuireann; and Deirdre and the Sons of Usnach. Of the three the last is perhaps the most interesting, because the story happened partly in Scotland and partly in Ireland, and it is found both in old Irish and in old Scottish manuscripts.

"There is such a one," said Lavarcam, "he is Naisi the son of Usnach."

"Fergus sent forth the third cry, and the sons of Usnach knew it was Fergus that sent for the cry.