During the civil war, in the reign of Charles I., the Castle resumed some share of its former importance, and was garrisoned for the royal party. The dilapidated walls were repaired, and its gates strongly fortified. After its surrender to the parliamentary forces, in 1645, it escaped the destruction that fell upon many other castles, owing to the circumstance of its being entrusted by the House of Commons to the government of Colonel Mitton, a native of the county, who, displeased with the virulent persecution of the king, soon after resigned his commission. Colonel Mackworth was then appointed governor, and he was succeeded by Colonel Hunt. On the restoration of Charles II., the property of the Castle returned to the burgesses, who in 1663 surrendered it to the king. That monarch shortly afterwards presented it to Viscount Newport, afterwards Earl of Bradford. The garrison at this time consisted of two companies with their officers; the daily expenses of which, as given in an old record, are stated at £8. 17s., or £3,230. 5s. per annum. The Castle continued in a fortified state, and had a large magazine of arms, which was not removed till the reign of James II. It is probable that the out-works were in a great measure destroyed, and its ancient chapel demolished, about this period. The part still remaining was leased by the Earl of Bradford to Mr. Gosnell. About the year 1730, this gentleman converted it into a gloomy habitation, in which state it remained until Sir William Pulteney repaired and greatly improved it. The outer walls of the Castle are now undergoing a complete reparation by the present proprietor, the Duke of Cleveland.