 The mill was built to drain the marshes into the river.The mill's name relates to Percy M. Moy who lived at Smallburgh Manor in the 1920s and ran Manor Farm containing land drained by the mill.The mill only had a small tower which was later heightened and in later years two pairs of patent sails, each with five bays of shutters, were fitted along with a very small cap, a gallery and an eight-bladed fan.