Seizing the valley of the Don and whatever breaks there were in the woodland that then filled the space between the Humber and the Trent, the Engle followed the curve of the latter river, and struck along the line of its tributary the Soar. Here round the Roman Ratae, the predecessor of our Leicester, settled a tribe known as the Middle-English, while a small body pushed further southwards, and under the name of "South-Engle" occupied the oolitic upland that forms our present Northamptonshire. But the mass of the invaders seem to have held to the line of the Trent and to have pushed westward to its head-waters. Repton, Lichfield, and Tamworth mark the country of these western Englishmen, whose older name was soon lost in that of Mercians, or Men of the March. Their settlement was in fact a new march or borderland between conqueror and conquered; for here the impenetrable fastness of the Peak, the mass of Cannock Chase, and the broken country of Staffordshire enabled the Briton to make a fresh and desperate stand. [Sidenote: Conquests of West-Saxons] It was probably this conquest of Mid-Britain by the Engle that roused the West-Saxons to a new advance. For thirty years they had rested inactive within the limits of the Gwent, but in 552 their capture of the hill-fort of Old Sarum threw open the reaches of the Wiltshire downs, and a march of King Cuthwulf on the Thames in 571 made them masters of the districts which now form Oxfordshire and Buckinghamshire. Pushing along the upper valley of Avon to a new battle at Barbury Hill they swooped at last from their uplands on the rich prey that lay along the Severn. Gloucester, Cirencester, and Bath, cities which had leagued under their British kings to resist this onset, became in 577 the spoil of an English victory at Deorham, and the line of the great western river lay open to the arms of the conquerors. Once the West-Saxons penetrated to the borders of Chester, and Uriconium, a town beside the Wrekin which has been recently brought again to light, went up in flames. The raid ended in a crushing defeat which broke the West-Saxon strength, but a British poet in verses still left to us sings piteously the death-song of Uriconium, "the white town in the valley," the town of white stone gleaming among the green woodlands. The torch of the foe had left it a heap of blackened ruins where the singer wandered through halls he had known in happier days, the halls of its chief Kyndylan, "without fire, without light, without song," their stillness broken only by the eagle's scream, the eagle who "has swallowed fresh drink, heart's blood of Kyndylan the fair." CHAPTER II THE ENGLISH KINGDOMS 577-796 [Sidenote: Britain becomes England]