Grade I listed.
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The castle was originally a motte and bailey castle built in 1090 by Robert de Romille. In 1310 Edward II granted the castle to Robert Clifford who was appointed Lord Clifford of Skipton and Guardian of Craven.
During the English Civil War the castle was the only Royalist stronghold in the north of England until December 1645.
Wikipedia:
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See other images of Skipton Castle