 Cerball is remembered in historical sources as a great and heroic king, possessed of victorious and daring exploits with many colourful anecdotes written about him.He is mentioned in all the major Irish annals, bringing the Osraige into military prominence during his reign, securing a very strong marriage alliance with the high king and gaining political independence away from Munster.Irish, Scandinavian and Welsh sources record his existence; several annals in particular contain unique information about him.