Columbia Encyclopedia

(Encyclopedia) neutron, uncharged elementary particle of slightly greater mass than the proton. It was discovered by James Chadwick in 1932. The stable isotopes of all elements except hydrogen and helium contain a n...

(Encyclopedia) Wellesley, Richard Colley Wellesley, 1st Marquess, 1760–1842, British colonial administrator; brother of Arthur Wellesley, 1st duke of Wellington. He became earl of Mornington on his father's death ...

(Encyclopedia) Bosworth Field, Leicestershire, central England. It was the scene of the battle (1485) at which Richard III was killed and the crown was passed to his opponent, the earl of Richmond (Henry VII), first...

(Encyclopedia) Morris, family of prominent American landowners and statesmen. Richard Morris, d. 1672, left England after serving in Oliver Cromwell's army, became a merchant in Barbados, and emigrated to New York C...

(Encyclopedia) Derby, Thomas Stanley, 1st earl of därˈbē [key], 1435?–1504, English nobleman. During the Wars of the Roses, Stanley was ostensibly a supporter of the Lancastrian Henry VI, but he had Yorkist sym...

(Encyclopedia) Arthur I, 1187–1203?, duke of Brittany (1196–1203?), son of Geoffrey, fourth son of Henry II of England and Constance, heiress of Brittany. Arthur, a posthumous child, was proclaimed duke in 1196,...

(Encyclopedia) Pembroke, William Marshal, 1st earl of, d. 1219, English nobleman. He became (1170) a guardian of Prince Henry, eldest son of Henry II, and supported him in his abortive rebellion (1173–74) against ...

(Encyclopedia) Pole, English noble family. The first member of importance was William de la Pole, d. 1366, a rich merchant who became the first mayor of Hull (1332) and a baron of the exchequer (1339). His oldest so...

(Encyclopedia) Clarence, George, duke of, 1449–78, son of Richard, duke of York, and brother of Edward IV. In defiance of Edward, Clarence married Isabel Neville and joined her father, Richard Neville, earl of War...

(Encyclopedia) Clarence, Lionel, duke of, 1338–68, third son of Edward III of England. His marriage (1352) to Elizabeth de Burgh gained him the title and lands of the earl of Ulster. Governor of Ireland from 1361 ...