Editing River Sheaf (section)

==Name==
Until the 17th century the name ''Sheaf'' was written as ''Scheth'' or ''Sheath''.<ref name=ADDY1888>{{harvnb |Addy |1888 |pp=xxix–xxx}}</ref> [[Sidney Oldall Addy]] equates the origins of this word with the [[Old English language|Old English]] ''shed'' (as in ''[[Drainage divide|water-shed]]'') or ''sheth'', which mean to divide, or separate.<ref name=ADDY1888/> Historically, the Sheaf&mdash;along with its tributaries the [[Meers Brook]] and the [[Limb Brook]]&mdash;formed part of the border separating the [[Anglo-Saxons|Anglo-Saxon]] kingdoms of [[Mercia]] and [[Northumbria]]; it remained on the border between [[Yorkshire]] and [[Derbyshire]] into the 20th century. The city of Sheffield derives its name from the Sheaf.