The system of
manorial land tenure, broadly termed
feudalism, was conceived in France, but was exported to areas impacted by French expansion during the
Middle Ages, including the British Isles after the
Norman Conquest. In this feudal system, the demesne was all the land retained and managed by a
lord of the manor for his own use and support. It was not necessarily all
contiguous to the
manor house. A portion of the demesne lands, called the
lord's waste, served as public roads and common pasture land for the lord and his tenants. Most of the remainder of the land in the manor was
sub-enfeoffed by the lord to others as sub-tenants. Initially, the demesne lands were worked on the lord's behalf by
villeins or by
serfs, who had no right of tenure on it, in fulfilment of their feudal obligations, but as a
money economy developed in the later Middle Ages, the serfs'
corvée came to be commuted to money payments. With the advent of the
early modern period, demesne lands came to be cultivated by paid labourers. Eventually, many of the demesne lands were leased out either on a perpetual (i.e., hereditary) or a temporary renewable basis so that many peasants functioned virtually as free proprietors after having paid their fixed rents. In times of
inflation or debasement of coinage, the
rent might come to represent a
pittance, reducing the feudal aristocrat to poverty among a prosperous
gentry. Demesne lands that were leased out for a term of years remained demesne lands, though no longer in the occupation of the lord of the manor. See, for example,
Musgrave v Inclosure Commissioners (1874) LR 9 QB 162, a case in which the three judges of the Queen's Bench Divisional Court and everyone else concerned assumed without argument that farms which were let by the lord of the manor were part of the lord's demesne land. In Ireland, demesne lands were often demarcated with high stone walls. Today, 24
townlands in Ireland bear the name of "Demesne", and many others contain the word. ==Royal demesne==