Colwyn Castle near Hundred House, Powys. The Roman Fort in which the later castle was built is clearly visible, as is the castle earthworks.
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Colwyn Castle was a medieval castle near Llansantffraed in Wales. It was built on the site of a Roman fort. The castle was captured in 1196 by Rhys ap Gruffydd, who was campaigning against the Normans. It was rebuilt in 1242 by Ralph de Mortimer to protect the lordship of Maelienydd, which he had recently acquired.
- Jones, T, ed. (1941), Brut y Tywysogion: Peniarth MS. 20, University of Wales Press
- Lewis, Samuel (1849), A Topographical Dictionary of Wales, Institute of Historical Research, pp. 85–98
Coordinates: 52°10′37″N 3°18′23″W / 52.1769°N 3.3065°W