Bede, H.E., Book IV, capítulo 23Archivado el 14 de mayo de 2011 en Wayback Machine.; ver también Ziegler, The Politics of Exile in Early Northumbria, The Heroic Age, y D. P. Kirby, The Earliest English Kings, página 61, dóde se sugiere la culpabilidad de Etelfrido.
But soon after, the king of the Britons, Cadwalla, slew them both, through the rightful vengeance of Heaven, though the act was base in him. He first slew Osric, the next summer; for, being besieged by him in a strong town, he sallied out on a sudden with all his forces, by surprise, and destroyed him and all his army. Beda. Historia ecclesiastica gentis AnglorumArchivado el 13 de mayo de 2011 en Wayback Machine., Libro III, Capítulo I
Bede, H.E., Book IV, capítulo 23Archivado el 14 de mayo de 2011 en Wayback Machine.; ver también Ziegler, The Politics of Exile in Early Northumbria, The Heroic Age, y D. P. Kirby, The Earliest English Kings, página 61, dóde se sugiere la culpabilidad de Etelfrido.
But soon after, the king of the Britons, Cadwalla, slew them both, through the rightful vengeance of Heaven, though the act was base in him. He first slew Osric, the next summer; for, being besieged by him in a strong town, he sallied out on a sudden with all his forces, by surprise, and destroyed him and all his army. Beda. Historia ecclesiastica gentis AnglorumArchivado el 13 de mayo de 2011 en Wayback Machine., Libro III, Capítulo I
Sobre el poder de Oswald en gran Bretaña ver: H. E., Book III, chapter 6; Sobre Oswiu haciendo tributarios a pictos y escotos ver: Book II, chapter 5. Kirby,, p. 70, Kirby indica como Beda define la supremacía de Oswaldo en términos excesivos.
