Note: Do not rely on this information. It is very old.
Cavendish William
Cavendish, William, Duke of Newcastle, son of Sir Charles Cavendish, was born in 1592, and educated at St. John's College, Cambridge. Becoming a favourite at court, he was made Earl of Newcastle by Charles I., whom he strongly supported against the Parliamentarians. He was appointed general of all the King's forces raised north of the Trent, with power to issue edicts, confer knighthoods, coin money, etc. After the royal cause became hopeless, he retired to the Continent, where he remained until the Restoration, when he was rewarded with a dukedom. He wrote several plays and a treatise on horsemanship.