. . . from his third son, Eochaid Breac, that the chief tribes of Aidhne are descended. This Eochaid had a son Eoghan, who was fostered by one of the Firbolg tribes then resident in the territory of Aidhne. He is known in history as " Eoghan Aidhne," from the fact that he was " fostered in the territory of Aidhne."242