| Country: | Wales |
| Welsh Name: | Cnwclas |
| Coordinates: | 52.361°N -3.1°W |
| Population: | 220 |
| Population Ref: | https://web.archive.org/web/20070929131736/http://www.powys.gov.uk/uploads/media/03_BEGUILDY_en.pdf |
| Official Name: | Knucklas |
| Unitary Wales: | Powys |
| Lieutenancy Wales: | Powys |
| Constituency Westminster: | Brecon & Radnorshire |
| Post Town: | Knighton |
| Postcode District: | LD7 |
| Postcode Area: | LD |
| Dial Code: | 01547 |
| Os Grid Reference: | SO251742 |
| Static Image: | Approaching Knucklas Viaduct - geograph.org.uk - 330122.jpg |
| Static Image Width: | 240px |
| Static Image Caption: | Knucklas Viaduct, on the Heart of Wales Line, and the village of Knucklas beneath |
Knucklas (Welsh: Cnwclas, meaning "green hillock") is a village in Powys, Wales, previously Radnorshire. It lies in the upper valley of the River Teme, just off the B4355 road and is served by Knucklas railway station on the Heart of Wales Line. It is approximately 2miles from the market town of Knighton.
A protected ancient monument in the care of Knucklas Castle Community Land Project[1] and listed by Cadw,[2] it is the site of a castle believed to have been built by the Mortimers in about 1220–25.[3] It consisted of a square stone keep with four round towers, sited on top of a steep hill. There is some evidence that there may have been further outer walls. It was captured by a Welsh army in 1262, which destroyed the defences.
Below the castle lies the battlefield of the Battle of Beguildy thought to have been fought between the Welsh and the Mortimer family of Norman Marcher Lords in 1146. The castle was attacked and destroyed by the forces of Owain Glyndŵr in 1402 during his rebellion. Whilst there is a romantic story associating the castle location with the marriage of Guinevere and King Arthur,[4] this probably developed from an earlier story, which suggested that a marriage took place between Gwenhwyfar, the daughter of Ogrfan Gawr (also called 'Gogrfan Gawr "the Giant" of Castell y Cnwclas' – Knucklas Castle), and Arthur the warrior – there being no reference to Arthur as a king in the early Welsh texts.
The spectacular 13-arch span was completed by the Central Wales Railway in 1865 and recorded in an engraving from the Illustrated London News.[5]
Three Bronze Age torcs were found here and declared treasure in 1991. They are now housed in the National Museum, Cardiff.[6]
The parish church of St David was built in 1882, on the site of a medieval church. The font dates from the 15th century.[7]
The longest-burning tyre fire in British history occurred in Heyope, lasting 13 years from 1989 to 2001.[7]
