Grosmont is a parish and village in north Gwent, separated from Herefordshire by the river Monnow, and with an area of some 6800 acres. It had been over-run by the Normans by the end of the 11th century and for many years it was an important lordship, finally becoming part of the Duchy of Lancaster.
The fine church and castle are legacies of Norman rule; there was a castle here from about 1136, although the first stonework is usually dated as early 1200, while the elegant 'Eleanor's chimney' is later work.
St Nicholas is one of the largest parish churches in the area with a unique nave dating from the 13th century. The tower and spire were 14th century additions. Extensive restorations were carried out in the 19th century.
During the medieval years Grosmont was a flourishing market town but its importance declined until it lost its markets and the population dwindled. Until recently farming was the major occupation, for there were once some fifty farms; now there are only a dozen or so, although the land is still farmed – by 'indigenous' farmers taking up more land and by other farmers from outside the parish.
In the 19th century the population had peaked at 742 but even that would have been far below that of the days when Grosmont was an important market town. There is no industry in the parish but the village is active socially, retaining a single shop and a popular pub.