579AD. Frithuwald another son of King Ida, succeeded to the throne of Bernicia after his brotherTheodoric was slain by Owein of Rheged at the battle of Argoed Llfain. ( Leeming Lane, Yorkshire). Despite him being in the king lists and ruling Bernicia for six years, there is nothing further in the records of his reign.
In 580AD, During the reign of Frithuwald, however, the army of the kings of Ebrauc (York) Peredyr and Gwrgi, marched north to attack the Angles of Bernicia and were both killed by King Glappa of Bernicia at the battle of Caer Greu. Since Glappa died in 560AD, there are sound reasons to believe that Aella was more than likely to have been the king involved.
And since the original target of the attack was Bernicia, is it not more than possible that the army of Frithuwald would have been part of the opposing force involved in the battle?
