Then Mag Uidhir and Brian Mag Uidhir, with the six that were on horses and the three score kern, turned on them and routed the people of Ua Ruairc spiritedly, felicitously on that occasion and inflicted the defeat of Ath-Conaill and of "'the Graine "'- namely, a river that is between Fir-Manach and the Breifne-upon them.