Monastic granges were outlying landholdings held by monasteries independent of the manorial system. The first granges were owned by the Cistercians and other orders followed. Wealthy monastic houses had many granges most of which were largely agricultural providing food for the monastic community. A grange might be established adjacent to the monastery but others were established wherever it held lands, some at a considerable distance. Some granges were worked by lay-brothers belonging to the order, others by paid labourers.
Granges could be of six known types: agrarian, sheep or cattle farms, horse studs, fisheries and industrial complexes. Industrial granges were significant in the development of medieval industries, particularly iron working.
Granges were landed estates used for food production, centred on a farm and out-buildings and possibly a mill or a tithe barn. the word grange comes through French graunge from Latin granica meaning a granary. The granges might be located at some distance. They could farm livestock or produce crops. Specialist crops might include apples, hops or grapes to make beverages. Some granges had fish-ponds to supply Friday meals to the monastery. The produce could sustain the monks or be sold for profit. While under monastic control, granges might be run by a steward and worked by local farm labourers or perhaps lay brothers.
- Definition of grange in English, OED, retrieved 4 July 2017
- Historic England, "Iron mining shaft mounds and medieval earthworks south of Bentley Grange Farm (1005786)", National Heritage List for England, retrieved 4 July 2017