But Hengist and Ælle's men had touched hardly more than the coast, and the true conquest of Southern Britain was reserved for a fresh band of Saxons, a tribe known as the Gewissas, who landed under Cerdic and Cynric on the shores of the Southampton Water, and pushed in 495 to the great downs or Gwent where Winchester offered so rich a prize. Nowhere was the strife fiercer than here; and it was not till 519 that a decisive victory at Charford ended the struggle for the "Gwent" and set the crown of the West Saxons on the head of Cerdic. But the forest belt around it checked any further advance; and only a year after Charford the Britons rallied under a new leader, Arthur, and threw back the invaders as they pressed westward through the Dorsetshire woodlands in a great overthrow at Badbury or Mount Badon. The defeat was followed by a long pause in the Saxon advance from the southern coast, but while the Gewissas rested, a series of victories whose history is lost was giving to men of the same Saxon tribe the coast district north of the mouth of the Thames.
It is probable, however, that the strength of Camulodunum, the predecessor of our modern Colchester, made the progress of these assailants a slow and doubtful one; and even when its reduction enabled the East Saxons to occupy the territory to which they have given their name of Essex a line of woodland which has left its traces in Epping and Hainault forests checked their farther advance into the island.
Though seventy years had passed since the victory of Aylesford only the outskirts of Britain were won. The invaders were masters as yet but of Kent, Sussex, Hampshire, and Essex. From London to St. David's Head, from the Andredsweald to the Firth of Forth the country still remained unconquered, and there was little in the years which followed Arthur's triumph to herald that onset of the invaders which was soon to make Britain England. Till now its assailants had been drawn from two only of the three tribes whom we saw dwelling by the northern sea, from the Saxons and the jutes. But the main work of conquest was to be done by the third, by the tribe which bore that name of Engle or Englishmen which was to absorb that of Saxon or Jute and to stamp itself on the people which sprang from the union of the conquerors as on the land that they won.
The Engle had probably been settling for years along the coast of Northumbria and in the great district which was cut off from the rest of Britain by the Wash and the Fens, the later East Anglia. But it was not till the moment we have reached that the line of defences which had hitherto held the invaders at bay was turned by their appearance in the Humber and the Trent. This great river line led like a highway into the heart of Britain; and civil strife seems to have broken the strength of British resistance. But of the incidents of this final struggle we know nothing. One part of the English force marched from the Humber over the Yorkshire wolds to found what was called the kingdom of the Deirans.
Under the empire political power had centred in the district between the Humber and the Roman wall; York was the capital of Roman Britain; villas of rich land-owners studded the valley of the Ouse; and the bulk of the garrison maintained in the island lay camped along its northern border. But no record tells us how Yorkshire was won, or how the Engle made themselves masters of the uplands about Lincoln. It is only by their later settlements that we follow their march into the heart of Britain. 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 Ratæ, the predecessor of our Leicester, settled a tribe known as the Middle English, while a small body pushed farther southward, and under the name of "South Engle" occupied the oölitic 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.
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 made them masters in 571 of the districts which now form Oxfordshire and Berkshire.
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."
With the victory of Deorham the conquest of the bulk of Britain was complete. Eastward of a line which may be roughly drawn along the moorlands of Northumberland and Yorkshire through Derbyshire and the Forest of Arden to the Lower Severn, and thence by Mendip to the sea, the island had passed into English hands. Britain had in the main become England. And within this new England a Teutonic society was settled on the wreck of Rome. So far as the conquest had yet gone it had been complete. Not a Briton remained as subject or slave on English ground. Sullenly, inch by inch, the beaten men drew back from the land which their conquerors had won; and eastward of the border line which the English sword had drawn all was now purely English.