Their deaths made room for Oswald to succeed to the kingdom of Northumberland; but Cadwalla drove him, with the rest that had given him disturbance, to the very wall which the emperor Severus had formerly built between Britain and Scotland. Afterwards he sent Penda, king of the Mercians, and the greatest part of his army, to the same place, to give him battle. But Oswald, as he was besieged one night by Penda, in the place called Heavenfield, that is, the Heavenly Field,[223] set up there our Lord's cross, and commanded his men to speak with a very loud voice these words: "Let us all kneel down, and pray the Almighty, living and true God, to defend us from the proud army of the king of Britain, and his wicked leader Penda. For he knows how justly we wage this war for the safety of our people." They all therefore did as he commanded them, and advanced at break of day against the enemy, and by their faith gained the victory. Cadwalla, upon hearing this news, being inflamed with rage, assembled his army, and went in pursuit of the holy king Oswald; and in a battle which he had with him at a place called Burne, Penda broke in upon him and killed him. FOOTNOTES: [Footnote 223: See Bede's Eccles. Hist. p. 110.] CHAP. XI.--_Oswy submits to Cadwalla. Penda desires leave of Cadwalla to make war against him._ Oswald, with many thousands of his men, being killed, his brother Oswy succeeded him in the kingdom of Northumberland,[224] and by making large presents of gold and silver to Cadwalla, who was now possessed of the government of all Britain, made his peace and submission to him. Upon this Alfrid, his brother, and Ethelwald,[225] his brother's son, began an insurrection; but, not being able to hold out against him, they fled to Penda, king of the Mercians, desiring him to assemble his army and pass the Humber with them, that he might deprive Oswy of his kingdom. But Penda, fearing to break the peace, which Cadwalla had settled through the kingdom of Britain, deferred beginning any disturbance without his leave, till he could some way work him up, either to make war himself upon Oswy, or allow him the liberty of doing it. At a certain Pentecost therefore, when Cadwalla was celebrating that festival at London, and for the greater solemnity wore the crown of Britain, all the kings of the Angles, excepting only Oswy, being present, as also all the dukes of the Britons; Penda went to the king, and inquired of him the reason, why Oswy alone was wanting, when all the princes of the Saxons were present. Cadwalla answered, that his sickness was the cause of it; to which the other replied, that he had sent over to Germany for more Saxons, to revenge the death of his brother Oswald upon them both. He told him further, that he had broken the peace of the kingdom, as being the sole author of the war and dissension among them; since Ethelfrid, king of Northumberland, and Ethelwald, his brother's