Records of the village's early history have been lost, but there is evidence of activity in the area from around 700AD. Longnor is listed in the Great Domesday Book of 1086 as Longenalre. It is distinguished from the other modern Longnor near Shrewsbury which is in the Domesday Book as Lege. According to local legend the village was burned during the reign of William II as a punishment for the poaching of deer from the forests around Leek. The first written record cites the founding of St Bartholomew's Church in 1223 on the site of the present 18th century parish church, and over the next two centuries there were around 20 homes in the village. The 1787 Cary map of Staffordshire shows the village on a major crossroads. Cary wrote the name LONGNOR rather than Longnor, a style shared only with Leek and Cheadle in Staffordshire north of Stafford and The Potteries. This implies that Longnor was then a market town of some significance.
Methodist history
Built in 1780, the Methodist Chapel is one of the oldest in the area. John Wesley once preached at Longnor while passing through on a journey from Sheffield. However Methodist preachers had established a Methodist society before this in 1769. The fuller story of early Methodism in Longnor is told by J. B. Dyson, along with a brief biography of Mrs Cecily Ferguson who later was hostess to John Wesley on his visit to Amsterdam. In 1784, Longnor Methodist Society had 42 members. In 1870, a new Methodist Circuit was created, which was named the "Wetton and Longnor Methodist Circuit". The manse was built at Wetton, along with a new chapel building. But the importance of Longnor was also recognised. The original Wetton and Longnor Circuit had been Wesleyan, and in 1932 it took in some of the Primitive Methodist chapels in the area. In 1969 the circuit was closed and its chapels assigned to neighbouring circuits. The Methodist Chapel closed in the 1996, but some of the former members continued to meet for a while in a hired hall, because the journey to Buxton Methodist Church was not practical. The village formed the basis of two paintings by L. S. Lowry, Longnor, Derbyshire and A Village Square. He wrote of the latter work:
Some of the TV seriesPeak Practice was recorded here. The church of St. Bartholomew, Longnor has a contemporary sculpture of St. Bertram by British Frink School sculptor Harry Everington. The nearby Blakemere Pond is a body of water precariously perched upon a hilltop, with scenic views across the Peak District and beyond in two directions.