Troublous times followed the advent of the Conqueror. Exasperated by the tyranny of the favourites of Walcher, the first Norman prelate, the people set fire to the church and slew the bishop. Then followed William de St. Carileph, who founded the present church. He expelled the secular clergy, and introduced the Benedictine rule. For the part he took in the rebellion against William Rufus he was exiled for three years, and lived in Normandy. Animated by the sight of the beautiful churches which there abounded he resolved to erect a more glorious edifice on the rugged hill of Durham, and on his return commenced the work. The foundation stone was laid in 1093. He began to build the east end of the choir, and continued the walls as far as the first arch of the nave. After his death in 1096, the prior and convent continued the building until the advent of Bishop Flambard (1099-1128), who carried on the work and nearly finished the nave, aisles, western towers and doorway. The chapter-house was erected by the next bishop, Galfrid Rufus (1133-1140). Bishop Hugh Pudsey (1153-1195) built the Galilee Chapel. In 1229 Bishop Poore, the builder of Salisbury, was translated to Durham; he discovered the unsafe condition of the eastern apsidal walls of his church, and determined to erect the beautiful Chapel of the Nine Altars, which is such a charming specimen of Early English architecture. He did not live to carry out his design, which was continued after his death under the rule of Prior Melsanby. The priors of Durham rivalled the bishops in their zeal for perfecting their noble Cathedral. Prior Darlington erected a belfry, and Prior Fossor part of the monastic buildings and the west windows of the nave in 1342. Bishop Skirlaw (1388-1405) was the chief builder of the present cloisters. In 1429 the tower was struck by lightning, and was rebuilt under the direction of Prior Bell. [Illustration Durham Cathedral] The church was now complete, but like most of our cathedrals it has suffered from the evils of "restoration," and Wyatt, the destructive architect of the eighteenth century, was allowed to do much damage. We shall notice his handiwork as we examine the details of the building. There seem to have been great disputes between the bishop and the monks, and the peace of this solemn sanctuary was often disturbed by angry quarrels and open violence. Sometimes the Scots made incursions, and on one occasion William Cumin seized the castle and committed great ravages. In the time of Bishop Hatfield was fought the great battle of Neville's Cross, when, by the aid of St. Cuthbert and his banner, the English won the day, and a hymn of thanksgiving is still sung every year on the top of the tower. The choir used to sing on all the four sides, but on one occasion a choir-boy fell, and ever since they only chant the hymn from three sides.