Then came the City wall.
It is strange that nothing should be said anywhere about so strong and important a piece of work as the wall. When was it built, and by whom? When was it destroyed, and by whom? Was it standing when the Saxons began their occupation? It appears not.
My theory is this:—According to the opinion of Sir William Tite, which now seems generally accepted (Archæologia, vol. xxxiii.), the wall of London—not the Citadel wall—was built somewhere about the year 360 A.D. There is no record of the building; yet it was a great and costly work. The date of the building is of some importance, because the wall itself was a sign of weakness. There was no need of such a wall in the second or third centuries: the Citadel and the power of the Roman name were enough. In the next century—a period of decay—this assistance failed, the inhabitants ceased to rely on the Roman name. Then they looked around. Augusta was a very large City; it had become rich; it was full of treasure; for want of a wall it might be taken at a rush. Moreover, not only was the Roman arm weakened, but the position of the City was far less secure than formerly. Of old the approaches were mere tracks through forest and over moor; now they were splendid roads. It was by means of these roads, constructed for the use of the legions, that the Picts and Scots were able to descend into the very heart of the country, even within a day or two of London; it was by these roads that the pirates from the east, landing in Essex, would some day swoop down upon the City. At the date suggested by Sir William Tite there was, one can see plainly, insecurity enough; though the people, from long habit, still relied on the legions and on the Roman peace. For nearly four hundred years, without any fighting of their own, the citizens had been safe, and had felt themselves safe. After the wholesale exportation of rebels from the Roman soldiery by Paulus Catena, when the invaders of the north came every day farther south and nearer London, it was borne in upon the citizens that the time of safety was over, that they must now defend themselves, and that the city of Augusta lay stretched out for a mile along the river and half a mile inland without a wall or any defence at all.
ROMAN REMAINS FOUND IN A BASTION OF LONDON WALL
After the reprisals taken by Paulus Catena in 355 and his withdrawal, the country, nearly denuded of troops, lay open to invasion. But in the year 369 we have seen that Theodosius found the enemy ravaging the country round London, but they did not get in. The wall must have existed already. It was therefore between 355 and 369 that the wall was built. As I read history, it was built in a panic, all the people giving their aid, just as, in 1643, when there was a scare in the City because King Charles was reported to be marching upon it, all the people went out to fortify the avenues and approaches. Another reason for thinking this, apart from the general insecurity of the time, is the very significant fact that the wall is built not only with cut and squared stones, but with all kinds of material in fragments caught up from every quarter.
These fragments proclaim aloud that the construction of the wall was not a work resolved upon after careful consideration; that it was not taken in hand with the leisure due to so important a business; that the citizens could not wait for stone to be quarried and brought to London for the purpose; but that the wall was resolved upon, begun, and carried through with all the haste that such a work would allow, though with the thoroughness and strength which the Roman traditions enjoined.
In order to get stone enough for this great wall, the people not only sent to the quarries of Kent, whence came the “rag” and the sandstone, and to those of Sussex, where they obtained their chalk, but they also laid hands upon every building of stone within and without the City; they tore down the massive walls of the Citadel, leaving only the foundations; they used the walls and the columns and the statues of the forum and of the temple, and of all the official buildings; they took down the amphitheatre and used its stones; they even took the monuments from the cemeteries and built them up into the wall.
Fragments of pillars, altars, statues, capitals, and carved work of all kinds may be found embedded in the wall.
They took everything; and this fact is the chief reason why nothing of the Roman occupation—save the wall itself—remained above ground in Saxon times.