Once the City of Durham had been founded, the Bishops of Durham gradually acquired the lands that would become County Durham. Bishop Aldhun began this process by procuring land in the Tees and Wear valleys, including Norton, Stockton, Escomb and Aucklandshire in 1018. In 1031, King Canute gave Staindrop to the Bishops. This territory continued to expand, and was eventually given the status of a liberty. Under the control of the Bishops of Durham, the land had various names: the "Liberty of Durham", "Liberty of St Cuthbert's Land" "the lands of St Cuthbert between Tyne and Tees" or "the Liberty of Haliwerfolc" (holy Wear folk).