Corca Tri is a tribal name, applied to a territory which included the present baronies of Gallen, in Mayo, and Leyny and Corran, in Sligo ( Four Masters, a 885: Martyrology of Oengus, Index). Corran is the Irish Corann ( Rev. Celt., xv. 477). Our text says that Cormac's horns were hidden by Niamh mac Lugna & trit an dara comalta do Chormac. This is evidently corrupt. Cormac's foster-brothers were the sons of Lugna Firtri, king of Corann, who sheltered Cormac's mother Etan ( Silva Gadelica, II. 286). I therefore emend the text by substituting 'Firtri' for the meaningless & trit. ‘Nia mor mac Lugna Firtri’ is mentioned in the Book of Ballymote as "the son of Cormac's mother": see Irische Texte, III. 185, where ‘Lugdech’ should be ‘Lugna’. It appears, then, that Etan was taken to wife by Lugna, and bore him this son. The two foster-brothers mentioned in Silva Gadelica, II. 288, Ochomon and Nathnach, may have been Lugna's sons by another wife. As Corann is part of the territory of the Corca Firtri, it may be assumed that Lugna Firtri, king of Corann, belonged to that tribe: probably he was their king, and ancestor of the Angal who comes into our story. The Genealogy of the Gailenga of Corann is given in the Book of Lecan, 427. col. 3. Lugna Firtri is there called Lugna Fertri, and is said to have been grandson of Fiachu Suide, and descended from Morann mac Lir. The explanation of his cognomen given in the Coir Anmann ( Ir. Texte, III. 382) is evidently fanciful.