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DOLBADARN CASTLE, LLANBERIS

Manylion y Safle

© Copyright and database right 2020. All rights reserved. Ordnance Survey licence number 0100022206

NPRN 93541

Cyfeirnod Map SH55NE

Cyfeirnod Grid SH5859859817

Awdurdod Lleol Gwynedd 

Hen Sir Caernarfon

Cymuned Llanberis

Math o Safle CASTELL

Dosbarth Cyffredinol AMDDIFFYN

Cyfnod Canoloesol

Disgrifiad o´r Safle Dolbadarn Castle was one of three castles begun by the Prince of Gwynedd, Llywelyn ap Iorwerth in the early thirteenth century to defend the passes into Snowdonia, together with Dolwyddelan Castle (NPRN 952990) and Castell y Bere (NPRN 93719). It sits at the tip of Llyn Padarn, and controlled the main routeway through the Llanberis Pass, and also guarded the economically important cattle pastures of the area.

The masonry of the castle is of several periods: the earliest work is unmortared and consists of a simple curtain wall enclosing the summit of the rock, within which there were a number of rectangular structures, including a hall. A large, well-built round keep is a later addition dating from the 1230s. Its first-floor entrance was originally reached by a timber stair and, unusually, the doorway was defended by a portculis. Inside the tower, beam holes for the two main floor levels can be seen, as well as fireplaces. The basement was reached by a ladder and the second floor and roof via a circular staircase in which the spiral reverses direction halfway up. It is probable that this tower was the site of Owain ap Gruffud’s long imprisonment, from 1255 to 1277.

The castle fell into English hands after the defeat of Llywelyn ap Gruffudd in 1282 and was soon supplanted by Edward I’s new fortification at Caernarfon (NPRN 95318), and so was partially dismantled and abandoned. Little is recorded concerning the castle after the early fourteenth century, though there is a suggestion that Owain Glyndwr used the castle to imprison captives circa 1400.

Source: Avent, R. 2004. Dolwyddelan Castle, Dolbadarn Castle & Castell y Bere: Cadw Guide

K Steele, RCAHMW, 4 November 2008
Louise Barker, RCAHMW, October 2015

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