Note 74 — LECTURE IV. (28th October 1881.) THE ARCHITECTURE OF THE BROCHS.

That this object was practically attained by these simple means we have evidence in one case from the direct testimony of record. It is related in the Orkneyinga Saga, that Erlend, who (about A.D. 1155) carried off the widow of Maddad, Earl of Athol, took her north to Shetland, and took up his residence in Moseyarborg—the Broch of Mousa, described at the commencement of this Lecture. It is said that her son Harald, Earl of Orkney, pursued Erlend, and besieged him in the Borg, “but it was difficult to take it by assault,” and the siege failed because “Erlend had made great preparations.” This is the only record of the actual use of a Broch as a place of defence, and it bears out the inference drawn from an examination of the nature and arrangements of the structure, that it was difficult to take by assault, and equally difficult to reduce by siege, if the defenders were provided with supplies. It is also stated in the Saga of Egil Skalagrimson, that about two centuries and a half before this time (or somewhere about A.D. 900), Bjorn Brynjulfson, fleeing from Norway with Thora, Roald’s daughter, because her father would not consent to their marriage, was shipwrecked on the island of Mousa, landed his cargo and lived in the Borg during the winter, celebrating his marriage in it, and afterwards sailed for Iceland.—The Orkneyinga Saga (Edinburgh, 1873), p. cxi. and chap. 92.