Adomnan's assertion that Rhydderch did not die in battle can probably be taken at face value: the fulfillment of Columba's prophecy was the important issue for Iona and there was nothing to be gained by producing a fictional end for a king whose life and death were presumably already recorded in Glasgow and Dumbarton traditions.
A aseveración de Adomnan de que Rhydderch non morreu en batalla pode ser tomada probabelmente no seu significado literal: o cumprimento da profecía de Columba era asunto importante para Iona e non tiña nada que gañar ao producir un fin ficticio para un rei cuxa vida e morte xa formaban probabelmente parte das tradicións de Glasgow e Dumbarton.