Source.—Anglo-Saxon Chronicle. Translated by J. A. Giles. Bohn’s Library.

Anno 827.—This year the moon was eclipsed on the mass-night of midwinter,^[1] and the same year King Egbert conquered the kingdom of the Mercians, and all that was south of the Humber; and he was the eighth king who was Bretwalda. Ælle, King of the South Saxons, was the first who had thus much dominion; the second was Ceawlin, King of the West Saxons; the third was Ethelbert, King of the Kentishmen; the fourth was Redwald, King of the East Angles; the fifth was Edwin, King of the Northumbrians; the sixth was Oswald who reigned after him; the seventh was Oswy, Oswald’s brother; the eighth was Egbert, King of the West Saxons. And Egbert led an army to Dore against the Northumbrians, and they there offered him obedience and allegiance, and with that they separated.