Following the Norman slaughter at the hands of the Northumbrians, resistance to Norman rule spread throughout Northern England, including a similar uprising in York. William The Conqueror subsequently (and successfully) attempted to halt the northern rebellions by unleashing the notorious Harrying of the North (1069–1070). Because William's main focus during the harrying was on Yorkshire, County Durham was largely spared the Harrying. The best remains of the Norman period include Durham Cathedral and Durham Castle, and several parish churches, such as St Laurence Church in Pittington. The Early English period has left the eastern portion of the cathedral, the churches of Darlington, Hartlepool, and St Andrew, Auckland, Sedgefield, and portions of a few other churches.