Fort of Codhnach — This was the name of some fort near Drumcliff, in the barony of Carbury, below the town of Sligo, for the river here called Codhnach (pronounced Cownagh) was the ancient name of the river which discharges itself into the bay of Sligo, near the village of Drumcliff. There are many celebrated forts in the vicinity of this river, but it is impossible to conjecture what fort in this vicinity the poet had here in view.