Qualla: Deganwy Castle

Deganwy Castle: Introduction

Mon, 25 May 2026 00:00:00 GMT

Photo credit Maxime Guilbot, CC BY 2.0. Climb up the Vardre - the limestone outcrop on the east side of the Conwy estuary, the twin summit you can see from Llandudno - and you will find ditches, a few mounded earthworks, the trace of a fallen tower, and a panoramic view across the river to the great Edwardian castle of Conwy that replaced this place in 1283. Deganwy is what is left of one of the oldest defended sites in Wales. Maelgwn Gwynedd, king of Gwynedd in the early sixth century, is traditionally said to have ruled from here. Lightning struck the wooden stronghold in 812 and burned it down. Welsh princes destroyed it, Norman lords rebuilt it, Henry III spent more than two thousand pounds on it, and Edward I finally decided that a fresh castle on the other side of the river would serve him better. The Vardre has been quiet for seven and a half centuries.

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Image: Maxime Guilbot | CC BY 2.0

Deganwy Castle: Maelgwn and the volcanic plug

Mon, 25 May 2026 00:00:00 GMT

Photo credit User:Aetheling1125, CC BY-SA 3.0. Geology gave Deganwy its purpose. The Vardre is a volcanic plug, 110 metres high, rising abruptly out of an area of limestone in what is now the suburbs of Llandudno. It commanded the mouth of the Conwy estuary, the natural crossing point for east-west traffic along the north Wel...

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Image: User:Aetheling1125 | CC BY-SA 3.0

Deganwy Castle: Norman lord, Welsh prince

Mon, 25 May 2026 00:00:00 GMT

Photo credit Mattcymru2, CC BY-SA 3.0. After the Norman conquest of 1066, William the Conqueror installed Hugh d'Avranches as Earl of Chester, and Hugh's nephew Robert of Rhuddlan was given the campaign against Gwynedd. Robert built a castle at Rhuddlan and, according to the chronicler Orderic Vitalis, another at Dega...

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Image: Mattcymru2 | CC BY-SA 3.0

Deganwy Castle: 1241: scorched earth

Mon, 25 May 2026 00:00:00 GMT

Photo credit Jonathan Wilkins, CC BY-SA 2.0. Dafydd ap Llywelyn, son of Llywelyn the Great, inherited Deganwy along with the rest of Gwynedd. In 1241, ahead of an English advance into north Wales, Dafydd had his own castle destroyed rather than let it fall into Henry III's hands. The Annales Cambriae records the demolition....

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Image: Jonathan Wilkins | CC BY-SA 2.0

Deganwy Castle: 1283: replaced

Mon, 25 May 2026 00:00:00 GMT

Photo credit Ian Dalgliesh, CC BY-SA 2.0. Edward I's conquest of Wales in 1282-83 made Deganwy strategically redundant. The new Edwardian programme called for a fresh chain of castles built to a single design vocabulary by Master James of Saint George - Caernarfon, Harlech, Beaumaris, Conwy. Edward chose the west bank of...

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Image: Ian Dalgliesh | CC BY-SA 2.0

Deganwy Castle: What remains

Mon, 25 May 2026 00:00:00 GMT

Photo credit Nigel Swales, CC BY-SA 2.0. The site today is a scheduled monument, graded II* listed, free to walk. Two hills are joined by a saddle. On the eastern summit, the foundations of Mansell's Tower are still visible. The western summit holds the trace of another tower. Between them runs the line of the bailey, w...

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Image: Nigel Swales | CC BY-SA 2.0