It is imagined by some authorities that the fulness of the story and its apparent accuracy depend upon access to some early ecclesiastical record preserved at Dorchester and now lost. At any rate, Dorchester, whether because it had been, up till then, an unconquered Roman town, or for whatever other reason, becomes at once the ecclesiastical centre and one to which, even when this baptism takes place, the King of Northumbria was at the pains of travelling southward to, to be present as sponsor for the new Christian.

The story has a special historical interest, because it shows how very vague were the boundaries and the occupancies of the little wandering chieftains of this period. It need hardly be pointed out that no regular division into shires can have existed so early, and, as we have already insisted, the Thames itself was not a permanent boundary between any two definable societies, yet those who regard the Anglo-Saxon Chronicle as historical would show one Penda had appeared a few years before as the chief of a group of men with a new name, the Mercians—probably a loose agglomeration of tribes occupying the middle strip of England; a group whose dialect and measures of land are, perhaps, the ancestors of the modern Midland dialect and most of our measures. Cynegil's baptism could not have taken place in territory controlled by Penda, for he was the champion of all the Anti-Christian forces of the time, and though he had just defeated the West Saxons, and (according to a later legend) pushed back their boundary to the line of the Thames, his action, like that of all the little kings of the barbaric age in Britain, can have been no more than a march with a few thousands, a battle, and a retreat. In a word, the true and verifiable story of Cynegil's baptism is one of the many valuable instances which help to prove the unreliability of that part of the early Chronicle which does not deal with ecclesiastical affairs.

The priest who received Cynegil into the Church was one Birinus, an Italian, and perhaps a Milanese; he appears, from his first presence in Dorchester, to have fixed the seat of a bishopric in that village. His reasons for choosing the spot are as impossible to discover as are the origins of any other of the characteristics of the place. It was, in any case, as were so many of the sees of the Dark Ages, a frontier see—a sort of ecclesiastical fortress, pushed out to the very limits of the occupation of the enemy.

Whether Dorchester continued to be a bishopric from this moment onwards we cannot tell; but no less than three hundred years afterwards—in the tenth century—it appears again, and this time as the centre of the gigantic diocese which stretched throughout the whole of Middle England and right up to the Humber. The Conquest came, the diocese was cut up just afterwards, and the seat of the bishop finally removed from the village to Lincoln, and with the Conquest the importance of Dorchester as a fortified position, an importance which it had held for untold centuries, began to decline in favour of Oxford.

The artificial chain of fortifications up the Thames Valley, which had their origin under William the Conqueror, will call our attention to many other spots besides Oxford as these pages proceed, but it is interesting at this moment to consider Oxford in its early military aspect, when it succeeded Dorchester, and came forward as the chief stronghold of the upper Thames Valley above Wallingford.

The gravel bank north of the ford, by which what is presumed to have been the drovers' road from south to north crossed the river, had supported a very considerable population, and had attained a very considerable civil importance, long before the Conquest. It is difficult to believe that any new, especially that any extensive, centres of population grew up in Anglo-Saxon Britain, upon sites chosen by the barbarians. The Romans had colonised and densely populated every suitable spot. The ships' crews of open pirate vessels had no qualities suitable to the founding of a town; and when there is no direct evidence it is always safer of the two conjectures in English topography to believe that any spot which we find inhabited and flourishing in the Anglo-Saxon period, even at its close, was not a town developed during the Dark Ages but one which the pirates, when they first entered the island, had found already inhabited and flourishing, though sometimes perhaps more British than Roman. But though this is always the more historical way of looking at the probable origin of an English town it must be admitted that there is no direct evidence of any town upon the site of Oxford before the Danish invasions, and the first mention of the place by name is as late as eleven years after Alfred's death, when it is recorded that Edward, his son, "took possession of London and of Oxford and of all lands in obedience thereunto."

This first mention, slight as it is, characterises Oxford as being the town of the upper Thames Valley at the opening of the tenth century, and we have what is usually a good basis for history—that is, ecclesiastical tradition and a monastic charter—to show us that a considerable monastery had existed upon the spot for a century and a half before this first mention in the Chronicle.

There still exists in the modern town, to the west of it, a large artificial mound, one of those which have been discovered here and there up and down England, and which are characteristic of a late Saxon method of fortification. Before the advent of the Normans these mounds were defended by palisades only, and were used as but occasional strongholds. It may be conjectured that this Saxon work at Oxford dates from somewhat the same period as does the first mention of the town in the Chronicle. Twelve years later Alfred's grandson is mentioned as dying at Oxford. It may be presumed that his death would indicate the presence of a royal palace. We hear nothing more of this town during the remainder of the tenth century, but we have a long account in what is probably an accurate record of the rising of the townsmen against the Danes in the beginning of the eleventh. The Scandinavians made their last stand in the church of the monastery, and the townsmen burnt it. Five years later a new host of Danes took and burnt the town; and four years later again, Sweyn, in his terrible conquering march, captured it, after very little resistance, in the same year in which he took the crown of England. The brief episode of Edmund Ironside again brings the town into history: he slept here upon his way to London in the late autumn of 1016, and here, very probably, he was killed. From that moment the fortress (as it now certainly was) enters continually into that last anarchy which was only cured by a second advent of European civilisation and the success of its armies at Hastings.

The great national council of 1018, which may be called the settlement of Canute, was held at Oxford, and in 1036 another national council, of even greater importance, which was held to decide upon the succession of Canute's heirs, was again held at Oxford, and it was at Oxford that, four years later, the first Harold died.

Meanwhile, in the near neighbourhood of the city, at Islip, Queen Emma had, half a lifetime earlier, borne a son, who, after the death of all these Danes, remained the legitimate heir to the English throne. Islip was, most probably, not royal, but a private manor of the Queen's, which descended to the Confessor, and it is interesting to note in passing that it was his gift of this land and of its church to Westminster Abbey which originated the present connection between the two—a connection which has now, therefore, behind it nearly nine hundred years of continuity.