Note 17 — Chapter XV
Reading edition
"These were," says the commentator on St. Columcille's hymn, the "Altus," "the three battles which he had caused in Erin, viz., the battle of Cúl-Rathain, between him and Comgall, contending for a church, viz., Ross Torathair; and the battle of Bealach-fheda of the weir of Clonard; and the battle of Cúl Dremhne [Cooldrevna] in Connacht, and it was against Diarmait Mac Cerball [the High-king], he fought them both." Keating's account also agrees with this, but Reeves has shown that the two later battles in which he was implicated probably took place after his exile.