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Treoda, Whitchurch

Also known as, or recorded in historical documents as;
Tre Oda; Album Monasterium; Blank Mouster; Kibor; Castellum Kibur

In the community of Whitchurch.
In the historic county of Glamorgan.
Modern authority of Cardiff.
Preserved county of South Glamorgan.

OS Map Grid Reference: ST156804
Latitude 51.51640° Longitude -3.21788°

Treoda, Whitchurch has been described as a certain Timber Castle, and also as a probable Masonry Castle.

There are cropmark/slight earthwork remains.


Treoda Castle Mound, Whitchurch, at 30m above OD. The removal of a medieval motte during building operations revealed an earlier turf mound 12.8m in diameter, capped by clayey earth to an overall diameter of about 23m within a ditch. There was a small rectangular setting of stones at the centre, but there was no burial. Small fragments of bronze-age pottery were found in ditch silting. (Glamorgan-Gwent Archaeological Trust HER no00615s)

The chain of defence set up by Earl Gilbert de Clare, including Caerphilly and Castell Coch, with circular tower which is now destroyed. No sign of ditch/bailey. (Glamorgan-Gwent Archaeological Trust HER no00616s)

CARDIFF, TRE ODA (STj1S6804). A mound of two periods was totally excavated by J. K. Knight, E. J. Talbot and I. Rowlands for M.P.B.W., by mechanical means in advance of building. In the first period it was of turf, 80 ft. diam., and was almost certainly a bronze-age barrow, though no burial was found. Small crumbs of bronze-age pottery were found in the ditch, which had entirely silted up before enlargement of the mound in the second period. In the turf line between the primary mound and its enlargement were a little abraded Roman material and several early r zth-century sherds. The motte, 120 ft. diam. at base and composed of heavy pebbly boulder clay, survived only to a height of S ft.; there was no trace of the stone keep seen by G. T. Clark in the 19th century. An iron caltrop and 14th-century pottery were found in the secondary silting ofthe motte ditch. (Med. Arch., 1967)

Treoda Castle Mound marked the site of a medieval castle first mentioned in 1314 and probably built in the later thirteenth century. This was a manorial centre with a chapel to the south-east (NPRN 307792). In the early sixteenth century Leland noted vestiges of 'a pile or maner place'. The mound was lowered and otherwise landscaped in 1848 to form part of the garden of Plas Treoda (NPRN 20105) and the masonry discovered was used in the building of the Plas. It was finally levelled in 1966 following limited excavation. The mound was roughly circular, 40m across at its base and 1.6-2.0m high. Before 1848 it would have been some 3.6m high. The masonry uncovered may have been a large circular tower, but this is uncertain. Excavations showed that the mound had been raised over an earlier low turf mound some 25m in diameter. This may have been a prehistoric funerary monument and fragments of Bronze Age pottery were found. Abraded Roman tile and pottery were recovered from the surface of the turf mound and a few sherds of second and third century pottery have been recovered from the church site. The castle mound and chapel both stood within a roughly rectangular banked enclosure some 195m north-south by 160m. It is suggested that this was a Roman fort, however the setting, within a shallow valley, makes this unlikely. (Coflein–ref. RCAHMW, 1991)

Motte formed from Bronze Age round barrow. Site built over. King and Hogg write "Low mound, apparently a flat motte, though its shape may have been partly due to modern interference. When it was removed in 1966, no trace was found of the tower reported by Clark." Possibly mentioned in 1315 as a forcelettum. Suggest by Clark as site of Castellum Kibur mentioned 1203.

Album Monasterium is a name usually applied to Oswestry but occasional Whitchurch in Shropshire or Whitchurch in Glamorgan.
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This record last updated before 1 February 2016