Llantarnam Abbey
Cistercian·Wales·Active monastic institution / Historic building·12th century
Llantarnam Abbey is a historic Cistercian monastery site in Wales, founded in the late 12th century. After its dissolution in 1536, the site underwent various transformations, including becoming a country house and military depot, before being re-established as a monastic institution in 1946 by the Sisters of St Joseph of Annecy. The main abbey building is now a Grade II*-listed Tudor Revival country house.
Key Facts
- ›Founded in the last quarter of the 12th century as a daughter house of Strata Florida Abbey.
- ›Active as a Cistercian abbey for over 350 years until its dissolution in 1536.
- ›The property was later acquired by the Morgan family and subsequently rebuilt in Tudor Revival style in the 1830s.
- ›Became a monastic institution again in 1946, now housing the Sisters of St Joseph of Annecy.
- ›The main building is a Grade II*-listed Tudor Revival country house.

Tudor Revival
- Grade Ii*-Listed Building
- Site of A Former 12th-Century Cistercian Abbey
- Tudor Revival Country House
Lanterna
Saint David Lewis
Dissolution of the Monasteries, Rebuilding In Tudor Revival Style, Use As American Army Depot During Wwii, Re-Establishment As A Monastic Institution
About Llantarnam Abbey
Llantarnam Abbey is a historic site in Llantarnam, Cwmbran, Torfaen, southeast Wales, primarily known as the location of a former 12th-century Cistercian abbey and currently serving as a Grade II*-listed house for the Sisters of St Joseph of Annecy.
History and Significance
The abbey was established in the latter part of the 12th century as a daughter house of Strata Florida Abbey, becoming part of the growing Cistercian Order in Wales. It flourished for over three and a half centuries before its closure on 27 August 1536, during the suppression of the monasteries. Following its dissolution, the extensive lands associated with the abbey were acquired by the Morgan family. The site underwent a significant transformation in the 19th century when Reginald Blewitt rebuilt it in the Tudor Revival style between 1834 and 1836, a renovation noted for its considerable expense.
After periods of intermittent occupation and use as a depot for the American Army during World War II, Llantarnam Abbey was re-established as a monastic institution in 1946. It is now home to the Sisters of St Joseph of Annecy. The main building's architectural significance is recognized by its Grade II* listing, described as "an early and very elaborate Tudor revival country house."
Historical Context and Toponymy
The historical trajectory of Llantarnam Abbey is intertwined with the political and social changes in Wales. Its lands remained largely intact until the development of Cwmbran new town began in 1949. The name 'Llantarnam' itself has been subject to scholarly interpretation, with theories suggesting origins in the Welsh 'Nant Teyrnon' ('the brook of Teyrnon'), possibly referencing a figure from Welsh legend. The Latinized form 'Lanterna' was officially adopted for the site by the Cistercian General Chapter in 1272.
Source: Wikipedia ↗
Frequently Asked Questions
When was Llantarnam Abbey founded?
Llantarnam Abbey was founded in the last quarter of the 12th century. It served as a daughter house of Strata Florida Abbey.
What happened to Llantarnam Abbey after its dissolution?
Following its suppression in 1536, the abbey's lands were sold to the Morgan family. The site was later rebuilt as a country house and eventually became a depot for the American Army during World War II.
Is Llantarnam Abbey still an active monastery?
Yes, Llantarnam Abbey became a monastic institution again in 1946 and is currently occupied by the Sisters of St Joseph of Annecy.
What architectural style is Llantarnam Abbey?
The main abbey building was rebuilt in the Tudor Revival style between 1834 and 1836. It is noted as an 'early and very elaborate Tudor revival country house'.
What is the significance of Llantarnam Abbey's name?
Place-name studies suggest Llantarnam may originate from Nant Teyrnon, meaning 'the brook of Teyrnon', a figure from Welsh mythology. The Latinized name Lanterna was officially used from 1272.
Related Monasteries
Cwmhir Abbey
Cwmhir Abbey was a Welsh Cistercian monastery founded in 1176 by Cadwallon ap Madog, though a spurious tale attributed its origin to an earlier date and founder. Situated near Llandrindod Wells in Powys, the abbey endured significant hardship due to feuds with the Mortimer family and damage during English conflicts, including the uprising of Owain Glyndŵr. Despite an ambitious construction project for its church, it was abandoned due to ongoing troubles, leading to a drastic decline in its community size by the time of its dissolution in 1536.
Strata Florida Abbey
Strata Florida Abbey was a significant Cistercian monastery founded in 1164 in Wales. It served as a royal mausoleum for the Dinefwr family and was a vital center for Welsh culture and politics, notably compiling the "Brut y Tywysogion." The abbey faced destruction, plundering, and eventual dissolution in the 16th century, with its remains later undergoing archaeological excavation and preservation.
Llanllugan Abbey
Llanllugan Abbey was a Cistercian nunnery in Powys, Wales, notable for being one of only two Cistercian women's monasteries in the region. Founded in the early 13th century, it received significant land charters and income from appropriated churches, initially as a dependency of Strata Marcella Abbey. The abbey is also celebrated in Welsh literature, particularly through a poem by Dafydd ap Gwilym, though historical records suggest a small community.