The early Church of Brechin emanated from the Irish Church, and was assimilated in its character to the Irish monastery. Of the early connection, there still survives at Brechin the famous Round Tower, which now occupies the place of a spire at the south-west angle of the present church. This, with the older one at Abernethy, and the ruined one at Egilshay in Orkney, are the only surviving types in Scotland. There were said to have been four others, which are no longer existing, viz. Deerness in Orkney; West Burray, Tingwall, and Ireland Head, in Shetland.[142] Dr. Skene gives the date of the Abernethy one as about 870, or between that year and the close of the century, and asserts that the date of the Brechin tower can be placed with some degree of certainty late in the succeeding century.[143] Probably it was erected in the reign of Kenneth (971-995), or about 1012, when Brechin was destroyed by the Danes.[144] Egilshay probably dates about 1098.[145] The Brechin tower is capped by a conical stone roof. Dr. Joseph Anderson shows that those round towers are outliers of a group of which Ireland is the home;[146] and they were erected during the time when the Celtic Church was much perplexed by the pillaging attacks of the Danes, that the ecclesiastics might protect their valuable illuminated manuscripts, and other costly possessions. The Brechin one corresponds with the Irish ones, and is built in sixty irregular courses, of blocks of reddish-grey sandstone, dressed to the curve, but squared at neither top nor bottom; within, string-courses divide it into seven storeys, the topmost lighted by four largish apertures facing the cardinal points. A western doorway, 6-2/3 feet from the ground, has inclined jambs and a semicircular head, all three hewn from single blocks, and the arch being rudely sculptured with a crucifix, each jamb with a bishop bearing a pastoral staff, and each corner of the sill with a nondescript crouching animal.[147] The sculpture on the graceful Tower of Brechin was, there as elsewhere, the repetition in stone of the illuminated page of the Celtic scribe, who in turn repeated many of the graceful and varied designs of the pre-Christian worker in bronze and gold,[148] adding to them Christian symbols. Dr. Joseph Anderson finds in the figures of the crouching beast and winged griffin at Brechin a close affinity to the figures of nondescript creatures carved on the early sculptured memorial stones.[149]