Historic houses · South Wales
Trewyn House
In or near Longtown.
Trewyn House — house in Monmouthshire, Wales.

Wikimedia Commons contributors — see linked file page for photographer and licence licence
Plan your visit
- Typical visit
- 1 h–2 h
- Nearest railway station
- Abergavenny · 9.5 km
- Family-friendly
- Limited wheelchair access
Getting there & planning your visit
To visit Trewyn House, the nearest railway station is Abergavenny, located 9.5 km away. The postcode for sat-nav is NP7 7PG. Accessibility is limited for wheelchair users.
About
Trewyn House is a historic house in the United Kingdom — typically a country seat, manor, or town house with notable architecture or history. Heritage designation: Grade II* listed building. Wikidata describes it as: "house in Monmouthshire, Wales". Coordinates: 51.9001°, -2.9770°.
Photo gallery
Heritage listing
http://cadwpublic-api.azurewebsites.net/reports/listedbuilding/FullReport?lang=en&id=1931
From Cadw under OGL v3.
Protected designations
- Site of Special Scientific Interest: River Wye SSSI
Designations sourced from Natural England open data under OGL v3.
From the Wikipedia article
Trewyn House, Llanvihangel Crucorney, Monmouthshire, Wales, is a country house dating from 1692. Its origins are older but the present building was constructed by the Delahayes at the very end of the 17th century when the house sat in Herefordshire. It has since been extended and reconstructed giving an "obscure and complicated" building history. The house is Grade II* listed. The parkland has traces of 17th-century terracing and a rare Grade II* listed dovecote. It is listed Grade II on the Cadw/ICOMOS Register of Parks and Gardens of Special Historic Interest in Wales.
Excerpt from Wikipedia under CC BY-SA 4.0. See the source article linked in Sources below.
Background
History
The origins of the house are late-medieval, evidenced by the construction of the "extensive, vaulted cellars." The house was purchased by the Delahayes in the late 17th century, who rebuilt the house in 1672. At that point, the house was located in Herefordshire. In the late 18th century, the house was owned by Jeremiah Rosher, whose family promoted the seaside resort of Rosherville, at Northfleet in Kent. The Roshers owned the house until the late 19th or early 20th century, undertaking significant restorations in the 1870s directed by Isobel Bernadette Rosher, an amateur architect. In the early 20th century, the house was again restored to its 18th-century appearance, with alterations in…
Architecture
The house is of two storeys and seven bays, and is constructed of Old Red Sandstone with Welsh slate roof tiles. All have a Grade II* heritage designation. The structure is octagonal, constructed of red brick, with a slate and wooden roof.
Sourced from Wikipedia under CC BY-SA 4.0.
- Coordinates
- 51.9001, -2.9770
- District
- Monmouthshire
- Parish
- Crucorney
- Postcode
- NP7 7PG
- Parliamentary constituency
- Monmouthshire
- Established
- 1692
- Nearest railway station
- Abergavenny — 9.5 km
Sources
- wikidata: Q17743303 (CC0)
- wikipedia: Trewyn House (CC BY-SA 4.0)
- commons: Trewyn House 1.jpg (CC BY-SA 4.0)
Other places nearby

Pandy Caravan Club Site
Campsites · 0.6 km

Pandy
Villages · 0.7 km

Pen-Twyn
Vineyards · 0.7 km

Bridge on River Monnow at Trewyn Mill
Historic bridges · 0.8 km

The Moat Mound and Bailey Castle, Tre Fedw
Literary houses · 1.1 km

The Moat
Castles · 1.1 km

Pen Llwygy
Mountains & hills · 1.3 km

Great Llwygy
Mountains & hills · 1.5 km

Rising Sun Caravan SIte
Campsites · 1.6 km

Dirt Farm Cycle Centre
Farms (open to visitors) · 1.7 km

Oldcastle
Literary houses · 1.7 km

Pont Rhys Powell
Historic bridges · 1.8 km
Nearby
Vineyards · South Wales
Pen-Twyn
Pen-Twyn — a UK vineyard in wales south, producing English or Welsh wine from cool-climate grape varieties.
Historic bridges · South Wales
Bridge on River Monnow at Trewyn Mill
Bridge on River Monnow at Trewyn Mill — Grade II listed building-listed bridge in wales-south, United Kingdom.
Literary houses · South Wales
The Moat Mound and Bailey Castle, Tre Fedw
The Moat Mound and Bailey Castle, Tre Fedw — a literary house museum in wales south.
Where to eat & stay near Trewyn House
Places to stay
Campsites · South Wales
Pen-y-dre Caravan & Camp Site
Pen-y-dre Caravan & Camp Site — a campsite in wales south.
📷 5
📷 5Places to eat & drink
📷 5Historic pubs · South Wales
Skirrid Mountain Inn
Skirrid Mountain Inn — Historic pub — listed building or notable heritage status.
📷 5Historic pubs · South Wales
Cornewall Arms
Cornewall Arms in Wales South, United Kingdom.

Restaurants · South Wales
The Walnut Tree
The Walnut Tree — a restaurant in wales south.
Historic pubs · Mid Wales
Black Swan
Black Swan — Historic pub — listed building or notable heritage status.
More historic houses in this region
📷 3Historic houses · South Wales
Agincourt House
Agincourt House — Grade II* listed building in Monmouth. Building in Monmouth, Wales.
📷 3Historic houses · South Wales
Big House, Landshipping
Big House, Landshipping — house in Martletwy, Pembrokeshire, Wales, UK.
📷 3Historic houses · South Wales
Boverton Place
Boverton Place — building in Llantwit Major, United Kingdom.
📷 3Historic houses · South Wales
Brynderi House
Brynderi House — house in Llantilio Crossenny, Monmouthshire, Wales.
Frequently asked questions
- Where is Trewyn House?
- Trewyn House is in South Wales, United Kingdom (postcode NP7 7PG), in the parish of Crucorney.
- What is Trewyn House?
- Trewyn House — house in Monmouthshire, Wales.
- How do I get to Trewyn House?
- The nearest railway station is Abergavenny, about 9.5 km away. Drivers can use postcode NP7 7PG.
- When was Trewyn House built?
- Built or established in 1692.
- Who owns Trewyn House?
- Trewyn House is owned by Privately owned.
- Is Trewyn House a listed building?
- Trewyn House is officially recognised as Grade II* listed building listed.
- Is Trewyn House a protected site?
- Yes — Trewyn House is part of the River Wye SSSI Site of Special Scientific Interest.
- How do I get to Trewyn House?
- Drivers can navigate to postcode NP7 7PG. It sits within the Monmouthshire parliamentary constituency.