https://en.wikipedia.org/wiki/River_Don,_Yorkshire
The River Don (also called River Dun in some stretches) is a river in South Yorkshire and the East Riding of Yorkshire, England.It rises in the Pennines, west of Dunford Bridge, and flows for 70 miles (113 km) eastwards, through the Don Valley, via Penistone, Sheffield, Rotherham, Mexborough, Conisbrough, Doncaster and Stainforth.It originally joined the Trent, but was re …