sentences:  After the battle of Edgehill, Charles marched south and forced the surrender of the castle and its stock of 1,500 firearms.The fortifications were strengthened and in 1644 the castle was besieged again, this time by Parliamentary forces under the command of William Fiennes.The royal governor, the 18-year-old William Compton, held out between July and October, when Compton's brother, James, relieved the siege.