History of Sheffield of the 7th century. An enduring Celtic presence within this area is evidenced by the settlements called Wales and Waleswood close to Sheffield—the word "Wales" derives from the Germanic word "Walha", and was originally used by the Anglo-Saxons to refer to the native Britons. The name "Sheffield" is Old English in origin. It derives from the River Sheaf, whose name is a corruption of "shed" or "sheth", meaning to divide or separate. "Field" is a generic suffix deriving from the Old English "feld", meaning a forest clearing. It is likely then that the origin of the present-day city of Sheffield
Geography of Sheffield air pollution measurements for Sheffield (City Centre and Tinsley districts) as well as many other UK towns and cities. The European Commission's COST Action C11 (COST- European Cooperation in Science and Technology) cites, in its conclusions on "Case studies in Greenstructure Planning" involving 15 European countries:- " "Sheffield is fortunate to have one of the strongest green structures of any city in the UK. This green structure, which at its core is linked by watercourses, underlies the City. The effectiveness of the river system as the core of the green structure is supplemented by: the agricultural area, the moorland, the