It is believed that St. Blane, in the seventh century, here founded a Columban establishment, which is said to have been an offshoot from Kingarth in Bute.[41] The bishopric was re-established by King David I. in 1150. The ancient square tower of the cathedral which still survives is a relic of the structure erected in the twelfth century. Nothing is known of the cathedral from that time till 1233, when Clement was appointed to the see. Finding everything connected with the bishopric in a neglected condition, he repaired to Rome and laid the case before the Pope, pointing out that the Columban monastery had fallen into lay hands, that the church was roofless and without a pastor, and that divine service was only occasionally performed. He succeeded in his appeal, and, in 1238, the Bishops of Glasgow and Dunkeld were appointed to settle matters between the Bishop of Dunblane and the Earl of Monteith who had raised certain claims. Clement died in 1258, after having re-established the bishopric, and, it is believed, partly, if not entirely, rebuilt the cathedral. To judge from the style of the architecture, it is probably the case that the structure was at least begun by him, though the style indicates that it was not completed before the end of the thirteenth century. This cathedral is one of our noblest structures, and situated as it is on the high east bank of the Allan, which here swells out into a broad [Illustration: FIG. 508. Dunblane Cathedral. View from South-West.] [Illustration: FIG. 509.--Dunblane Cathedral. Plan.] expanse, the view of the edifice, as seen from the south-west (Fig. 508), with its lofty front and ancient tower rising above the wooded bank of the stream, is particularly charming. The structure (Fig. 509) consists of a nave of eight bays, with north and south aisles, an aisleless choir of six bays, an northern aisle unconnected with the choir, except by a doorway, and the twelfth century tower attached to the south aisle of the nave.