The Admiralty, having purchased in 1937 an extensive area of land in Llanychaer and adjacent parishes five miles SSE of Fishguard, Pembrokeshire, kindly permitted the National Museum of Wales to examine and make records of any sites or buildings of interest therein.
I visited the local headquarters at Trecŵn in June 1937 for this purpose. The site consists of a narrow valley—at one point a gorge with rocky scarps—and its flanking uplands. The western half is occupied by Trecŵn House, its parkland and village, an estate developed in the English manner and providing little of antiquarian interest. The remainder was largely under different ownership, and, apart from Llanychaer church and farm, both of which are modernized, more primitive conditions survive in it. This portion of the area, which includes the picturesque rock-wall of Graig Lwyd, is shown in FIG. I. Each rectangle on the map represents a dwelling; and it will be seen that settlement is now confined to the floor and eastern side of the valley. It is of the diffuse type, which contrasts so strongly with the nucleated villages characteristic of England and met with in south Pembrokeshire and other anglicized parts of Wales. If the parish boundaries be examined (shown by a line of dots on the map) it will be seen that most of the houses are in Llanychaer parish, the ancient centre of which, the church, has only one farmstead near it. The shaded (red) portion of the map represents part of the common land (rough mountain pasture) of this and the adjacent parish. The dwellings within the area controlled by the Admiralty are overprinted in red.