Corpus of Electronic Texts Edition
The Expulsion of the Dessi (Author: Unknown)

paragraph 16

Then the Dessi chose the people of Ossory to be cleared out before them and to fight against. There were two druids with the Dessi, to wit, Drong and Cecht; and there was also a druid with those of Ossory, Dil, the descendant of Crecca, and the druids of the Dessi had been foster-sons of his. The Dessi fought seven battles with the men of Ossory at Lethet Laidcind in Ard Catha, in all of which they were routed by the men of Ossory.