|SE (9) to Gobannivm (Abergavenny, Gwent)
NW (11) to Y Gaer (Brecon Gaer, Powys)
|SO168219||c.420 x 295 ft
(c.128 x 90 m)
This rather small fort lies on a partly-augmented knoll at the mouth of Ewyn Brook valley, on the flat alluvial plain west of the Afon Rhiangoll. The fort platform is currently occupied by the buildings of Pen-y-gaer Farm in its eastern third and Greenhill Farm in its north-western corner angle; the somewhat winding lane which crosses the eastern half of the site may represent the general line of the via principalis and if this is the case, then the fort faced along the Ewyn valley to the ENE. The site was proven to be Roman during trial excavations conducted by D.W. Crossley in 1966 and subsequently published in Archaeologica Cambrensis (CXVII, 1968, pp.21/2).
The fort measures about 420 feet from ENE to WSW by 295 feet transversely (c.128 x 90 m), and therefore covers an area of only around 2¾ acres (c. 1.15 ha), which is rather small. Three building periods were noted in the construction of the defences:
Finds from the interior of the fort include "well-worked" building stones, pieces of cement, pottery sherds and urns, the stone foundations of several buildings, also several Roman coins, including those of Nero (dated c.A.D.67), Marcus Aurelius (A.D.145-61), Constantine I (c.A.D.307/8) and Constantius II (A.D.332/3). The pottery finds suggest a foundation date sometime during the campaigns of governor Julius Frontinus (c.A.D.73-8), with the stone rampart being added during the reign of Trajan (Imp.98-117). The presence of the later Roman coins points to some sort of continuing occupation of the site after the withdrawal of the original garrison, which possibly occurred sometime during the reign of Hadrian, as potsherds, bricks and tiles all dated c.A.D.80-130 were found in the upper fill of the defensive ditch, and there were no proveable Antonine sherds recovered.
The garrison was very likely a cohors quingenaria peditata, a regiment of a nominal 500 foot soldiers, which were evidently quartered in rather cramped conditions. It is possible, however, that the garrison unit - the identity of which remains unknown - was under-strength at the time the Pen-y-gaer fort was occupied.
|> PEREGRINI FEC|
"Made by the century of Peregrinus."
(RIB 401; building-stone; origin unknown)
There are two inscriptions recorded in the RIB from the area of Pen-y-Gaer, both from Tretower Castle which lies to the east of the Roman fort, 3 miles north-west of Crickhowell. Both are "centurial stones", building-stones inscribed with the name of the unit responsible for construction of some military architecture, and both were discovered in 1851. The first (RIB 401 supra) was found built into the north wall of Ty Llys Farmhouse at the entrance to Tretower House orchard, the second (RIB 402 infra) was found inverted, built into the north-west gate pillar of Tretower House; both stones remain in situ.
"The century of Valens [made this]."
(RIB 402; building-stone; origin unknown)