Dubad, whence the name? Not hard to say. A king held
sway over Erin, Bressal bó-dibad by name. In his time a murrain [plague/disease]
came upon the kine of Erin, until there were left in it but seven
cows and a bull. All the men of Erin were gathered from every
quarter to Bressal, to build them a tower after the likeness of
the Tower of Nimrod [a tall ziggurat], that they might go by it to Heaven. His
sister came to him, and told him that she would stay the sun’s
course in the vault of heaven, so that they might have an endless
day to accomplish their task. The maiden went apart to work
her magic. Bressal followed her and had union with her: so that
place is called Ferta Cuile from the incest that was committed
there. Night came upon them then, for the maiden’s magic was
spoilt. Let us go hence, say the men of Erin, for we only
pledged ourselves to spend one day a-making this hill, and since
darkness has fallen upon our work, and night has come on and
the day is done, let each depart to his place.
Dubad [darkening] shall be the name of this place for ever, said the maiden.
So hence are Dubad and Cnoc Dubada named.