The second non-British variant, which also attaches to London Bridge, is to be found in the Heimskringla,[22] and I will quote William Morris's translation:—

"West in Valland was a man infirm so that he was a cripple and went on knees and knuckles. On a day he was abroad on the way and was asleep there. That dreamed he that a man came to him glorious of aspect and asked whither he was bound and the man named some town or other. So the glorious man spoke to him: Fare then to Olaf's church the one that is in London and thou wilt be whole. Thereafter he awoke, and fared to seek Olaf's church and at last he came to London bridge and there asked the folk of the city if they knew to tell him where was Olaf's church. But they answered and said that there were many more churches there than they might wot to what man they were hallowed. But a little thereafter came a man to him who asked whither he was bound and the cripple told him. And sithence said that man: We twain shall fare both to the church of Olaf for I know the way thither. Therewith they fared over the bridge and went along the street which led to Olaf's church. But when they came to the lich gate then strode that one over the threshold of the gate but the cripple rolled in over it and straightway rose up a whole man. But when he looked around him his fellow farer was vanished."

I shall have to refer again to these Breton and Norse versions, because of their retention of London Bridge as the locale of the story, in common with all the versions which have been found in Britain. In the meantime it is to be noted that the remaining non-British variants are told of other bridges and other places. Holland, Denmark, Italy, Cairo, have their representative variants;[23] and it thus presents to the student of tradition an excellent example for inquiry as to the value to history of legends world-wide in their distribution attaching themselves to historical localities.

There are some obvious features about this group of traditions, which at once lead to interesting questions. There is first the fact that all the British variants of the treasure stories centre round London Bridge; secondly, there is the extension beyond Britain to the Breton variant and the Norse variant, both non-British legends, of which the locus is London Bridge. From these two facts it is clear that London Bridge had some special influence at a period of its history which dates before the separation of the Breton folk from their Celtic brethren in Britain, for the Bretons would not after their separation acquire a London Bridge tradition; and again at a period of its history when Norse legend and saga were fashioning. In the one case the myth-makers must have been Celts of the fourth century, and the only bridge known to these Celts must have been that belonging to Roman Lundinium; in the other case the myth-makers were Norsemen, and the bridge known to them was the later bridge so frequently referred to in the chronicle accounts of the Danish and Norse invasions of England.

It is not difficult, by a joint appeal to history and folklore, to trace out from this very definite starting-point the events which brought about this particular specialisation of the world-spread treasure myths.

Obviously the first point to note is that London Bridge loomed out greatly in the minds and understanding of people at two distinct periods of its history.[24] That the first period relates to its building is suggested by the date supplied by the evidence of the Breton version. The people who wondered at its building, or the results of its building, were certainly not the builders themselves, and we thus see a distinction in culture between the bridge builders and the wonder builders. This condition is exactly provided for by the building of the earliest London Bridge. It was a work of the Romans of Lundinium,[25] and the people who stood in wonder at this great enterprise were not the Roman engineers and builders, accustomed to such undertakings all over the then known world, and they must therefore have been the surrounding non-Roman people, who were the Celtic tribesmen. Now the culture-antagonism between the Romans of Lundinium and the Celts of Britain is, I believe, a factor of great importance,[26] though almost universally neglected by our historians, because they do not study the facts of early history on anthropological lines. Not only is it discoverable, as I think, from the facts of history, but the facts of tradition confirm the facts of history at all points. Thus I think it is important, if we can, to obtain independent testimony of the attitude of the surrounding people to the builders of London Bridge. We can do this by reference to the peasant beliefs concerning bridges, as, for instance, in Ireland, where on passing over a bridge they invariably pulled off their hats and prayed for the soul of the builder of the bridge,[27] and to the fact that the Romans themselves looked upon bridge-building as a sacred function, and would no doubt use this part of their work to the fullest extent, in order to impress the barbarism opposed to them.[28] The extent of this impression may probably be contained in the old and widely spread nursery rhyme of "London Bridge is Broken Down," an examination of which has led Mrs. Gomme to conclude that it contains reference to an ancient belief that the building of the bridge was accompanied by human sacrifice.[29] This conclusion is confirmed by the preservation in Wales of a bridge-sacrifice tradition. It relates to the "Devil's Bridge" near Beddgelert. "Many of the ignorant people of the neighbourhood believe that this structure was formed by supernatural agency. The devil proposed to the neighbouring inhabitants that he would build them a bridge across the pass, on condition that he should have the first who went over it for his trouble. The bargain was made, and the bridge appeared in its place, but the people cheated the devil by dragging a dog to the spot and whipping him over the bridge."[30] This is a distinct trace of a substituted animal sacrifice for an original human sacrifice. But this is a practice which sends us back to the most primitive times, and in particular we are referred to an exact parallel in India, where, on the governing English determining to build a bridge of engineering proportions and strength over the Hoogley River at Calcutta, the native Hindu tribesmen immediately believed that the first requirement would be a human sacrifice for the foundation.[31] The traditions attaching to London Bridge are therefore identical with the current beliefs concerning the Hoogley Bridge, and the culture-relationship of the bridge-builders to the surrounding people in both cases is that of an advanced civilisation to tribesmen. Now if these conditions of modern India are repetitions of the conditions of ancient Britain in the days of Lundinium, and of this there can be but little doubt, there is no difficulty in understanding to what part of history these traditions have led us. We are again in the days when London Bridge was a marvel—a marvel which sent travelling through the Celtic homes of Britain a new application of the treasure myth which they had inherited from remote ancestors. The marvel lived on through the ages when London was in the unique position of being an undestroyed city in Saxon times, times which witnessed the destruction of all other cities of Roman foundation,[32] and the sending forth of the Celtic refugees to Brittany.[33] The accumulation during a long-continuing period of conceptions of treasure being found by way of the bridge leading to London, would become the direct force for keeping the tradition alive; and while the facts of history show us the important position of London during the period which witnessed the departure of the Celtic Bretons to their continental home,[34] the facts of tradition show us the Celtic tribesmen deeming it a way to wealth through the magic potency of dreamland. The Celtic tribesmen stood outside Roman Lundinium. Its life was not their life, and their conversion of its position into a mythic treasure house or a mythic road to treasure, and their association of it with the bloody rites of the foundation sacrifice, are in strict accord with the historical relationship of the tribal life of Celtic Britain to the city life of Roman Lundinium.

I may be permitted perhaps to emphasise this significant accordance of history and tradition when working together. I have already alluded to the fact that I have worked out the history of London independently, and upon lines quite different from the present study. I have therefore a wider grasp of the two currents of history and folklore in this particular case than could in the ordinary way fall either to the historian or to the folklorist. That I can find in both just the complementary facts which help to realise the whole situation, to fill in the gaps of history which nowhere directly tells of the relationship of Roman Lundinium to the British Celts, to extend the outlook of folklore which nowhere recognises that there was a great Roman city of Lundinium which would dominate the minds of those not trained to city life, is a fortunate circumstance which neither historian nor folklorist is likely to repeat frequently, and I am entitled, I think, to claim the utmost from it. I can at least claim that it answers all the facts in a way that has not yet been accomplished. Thus Sir John Rhys has discussed the treasure legend and he can only account for it as part of the mythical trappings of Arthur into which "London Bridge is introduced," because London Bridge "formerly loomed very large in the popular imagination as one of the chief wonders of London." Sir John Rhys refers for confirmation of this to the "notion cherished as to London and London Bridge by the country people of Wales even within my own memory," and then goes on to say that "the fashion of selecting London Bridge as the opening scene of a treasure legend had been set perhaps by a widely spread English story," that of the Pedlar of Swaffham.[35] All this is very unsatisfactory. Modern notions of this sort would not set the fashion two centuries ago, nor extend it to Brittany. Nor is the suggestion in accord with other evidence as to the extension of tradition. What has happened is that the Arthur cycle has appropriated two London Bridge traditions and has worked them up into the Arthur form, the traditions themselves belonging to the far older period to which I have here referred them—a period when the burial of treasure was a necessary corollary to the events which were happening.[36] Buried treasure legends are found all over the country. They belong to the period of conquest and fighting. They are the evidence which tradition yields of the unrest of the times which caused them to arise. They are the fragments of history which tradition has preserved, while history has coldly passed them by.[37]

With this in the background as the corpus of a legend-covered London Bridge, we come to the second period.