Fig. 28. Round tower of Devenish, on Devenish Isle, Lower Lough Erne, near Enniskillen. Height, 84 feet; doorway, 9 feet from the ground; walls, 4 feet thick. The windows approximately face the Cardinal Points. A string course will be seen around the base of the conical cap.
A gradual advance can be traced in the architectural style of the round towers. The stages of their development were parallel to, and probably contemporaneous with, those of the churches and oratories[297]. Three periods of building have been distinguished. It is not until the beginning of the tenth century, says Miss Eleanor Hull, that we find the towers mentioned, and none can be dated earlier with certainty. They are later in date than the churches built by St Columba at Raphoe, Kells, and elsewhere, and they belong essentially to the period when the Northmen made their attacks on Ireland. Nevertheless, they continued to be built until the middle of the thirteenth century[298]. All these facts are of vast interest when we recollect those Lincolnshire churches which, folk-memory tells us, once served as refuges from the Danes.
Normally, the round tower contained three stories, and, like many of the English towers before described, had the outside door placed high up in the wall, so that it was accessible only by means of a ladder. Similarly, the oratory of Kells has three small chambers, or attics, between its round barrel vault and the outer pointed roof of stone; these chambers could be reached only by the aid of a long ladder, and entered through a hole in the inside roof. Viewed in comparison with the other buildings of the period, the oratory represents a lofty structure. It has a highly pitched roof, and receives no light save what is afforded by two small windows. This building is assigned by Miss M. Stokes to the year A.D. 807[299].
In passing, we note that the round tower was probably developed from the beehive hut, and became specialized for a definite purpose, which we shall discuss in a moment or two. The beehive house, in its turn, was most likely evolved from the wattled dwellings of the ruder aborigines of Ireland. Professor A. C. Haddon cited authorities to show that the round towers structurally betray their pagan design, by their retention of string-courses which serve no useful object. The towers, he considers, are, in reality, derived from primitive wicker huts, circular in plan, and of a somewhat tall type[300].
We now inquire what purpose the towers were intended to serve. The answer, though given with a fair degree of decisiveness to-day, has been long in coming, and there still exists a minority of writers who dissent from the orthodox view, and who favour other theories, some of which are of the fantastic kind.
The earliest name given to the round tower, so far as is yet recorded, is cloictech, or belfry (A.D. 948). Naturally, therefore, one is led to associate the towers with bells; yet, seeing that only small hand-bells are believed to have been in existence at that date, a large tower of masonry would not be needed for their reception. Nor, again, would these small bells have been well heard, when rung from the top of the tower, even by folk standing at the base[301]. The insignificant windows of the earlier towers are, for some unknown reason, usually near the floor. The later structures, it is true, have windows near the top, facing different points of the compass. These examples may have been used as belfries proper. Speaking generally, the towers were, nevertheless, not belfries. Even could it be proved that, co-eval with the towers, there existed a knowledge of bell-casting, that would not settle the question, because there are no structural signs that bells were ever hung, or rung, within the buildings. We may conclude, then, that the towers were, in part, depositories for bells, though not themselves actually bell-towers.
Dismissing a number of unsupported speculations, one by one, we are finally shut in to the conclusion that the towers were originally defensive. They were refuges for men, and storehouses for valuable property. This is the verdict delivered by those who, like Miss M. Stokes and Miss E. Hull, know the round towers best[302]. Mr G. T. Clark, in his early study of the subject, thought that the towers were principally intended to receive bells, and that their uses for refuge and storage were later adaptations. In after years, he changed his opinion, and declared that what he had formerly deemed the secondary purpose, was in reality the sole one[303]. A more recent authority, Mr Francis Bond, has compared the round tower with the Italian campanile, of which he considered it to be a local variety. But he draws this great distinction: the Italian structure was built to receive bells, and may afterwards have served for defence; with the builders of the Irish towers, refuge was the primary idea, though, at a subsequent period, bells were hung in the fortress. There remains an authority whose voice must be heard with great respect. Mr J. Romilly Allen, while agreeing that the bells of the early Celtic church were portable, and that they were rung by hand, contends that the towers were erected to accommodate bells of a heavier kind. Nevertheless, he admits that the Viking invasion gave an impetus to the building of the towers[304]. This divergence from the modern view is noteworthy, though if Mr Allen’s statement were restricted to the later buildings, the theories would harmonize fairly well.
When the Northmen swooped down upon a district, priests and people would hasten to the nearest tower. Thither the fugitives carried their most precious possessions: manuscripts, relics, sacred vessels, and vestments. Some objects of this kind may have been housed in the tower permanently. Once gathered within their asylum, the inhabitants were comparatively secure. They could hurl stones and other projectiles from the narrow loopholes, while they themselves were safe from danger, at least, until relief arrived. On the other hand, missiles thrown by the besiegers, either from the hand or a catapult, would rarely hit the defenders inside. A successful battery could not be made in a few minutes, and even firing the stone tower was not a speedy mode of overpowering the refugees.
After the Danish incursions came to an end, the towers would still serve as spy-places against native enemies, as “strongrooms” for protection against thieves, and, probably, as we have seen, as bell-towers for raising alarms. The pattern of the tower, moreover, would long survive its original necessity. Summing up, we may say that the round towers were defensive buildings, the use of which was mainly secular, but to some extent ecclesiastical also. Perhaps we ought rather to say that the religious and the secular uses were so blended that no demarcation could be made.
The round towers suggest to us parallel usages in England. The first similarity is that of the detached church tower, which is not a rare feature in our Gothic architecture. Selecting a few examples from a numerous list, we notice the isolated tower of Walton, Norfolk; Berkeley, Gloucestershire; Evesham, Worcestershire; and Ledbury, Herefordshire. The last-named county supplies several instances, a fact not without interest, in view of the geographical position. Bosbury tower, Hereford, is situated 60 yards from the South side of the church; while that of Pembridge, which stands on an eminence, is 25 yards distant from the main body of the building. As with the hill-top churches, the peasantry generally have a tradition to explain the anomaly. Thus, at Warmsworth, Yorkshire, two sisters, charitable, but obstinate, are said to have made a bequest for the building of a church. Each lady had chosen a site for the church; neither would give way. The fabric was in consequence built in detached portions. The bells call the folk to church in one direction, the congregation walks away to service in another. Obviously, the ordinary folk-tales, as told nowadays, do not fully explain the facts. In several cases, as at Wickes and Wrabness, in Essex, and at Brookland in Romney Marsh, it is evident, from the size and construction of the tower, that it was built, not for hanging bells, but for defence and refuge. The English detached towers, it will be remarked, are usually square, not circular. The round detached tower of Bramfield, in Suffolk, is an exception, and there may be others.