The Manchester Rebels by William H. Ainsworth

Surrounded by walls built in the time of Henry the Eighth, Carlisle, at the period of our history, boasted a fortress that had successfully resisted many an attack made upon it by the Scots.

Situated on an eminence, and partly surrounded by a broad, deep moat, fed by the river Eden, the citadel, strongly garrisoned and well provided with guns and ammunition, would seem to be almost impregnable. At the foot of the western walls flowed the river Caldew, while the castle overlooked the beautiful river Eden.