Langley Marish was in Buckinghamshire. The parish included part of the town of Colnbrook and the hamlets of George Green and Horsemoor Green. It is on the road from Uxbridge to Slough and was on the Slough branch of the Grand Junction Canal. The soil is loam and clay. Over one third of the land was permanent grass, over one quarter arable, and over one fifth woodland.
'Victoria County History: Buckinghamshire'.
OS Map Grid Ref(s): 32