B24 Grid reference SP128903
The future site of Fort Dunlop is shown on Greenwood's 1822 map as Greensills. A silI is s medieval topographical term for a 'shelf', probably referring here to the raised glacial gravel terrace along the River Tame.
William Dargue 14.01.10/ 02.08.2010
For 19th-century Ordnance Survey maps of Birmingham go to British History Online.