Wikipedia:Today's featured article/July 7, 2023

John Mowbray, 3rd Duke of Norfolk (1415–1461), was a fifteenth-century English magnate who was the only son and heir of John Mowbray, 2nd Duke of Norfolk, and Katherine Neville. As a minor he became a ward of King Henry VI and was placed under the protection of Humphrey, Duke of Gloucester, alongside whom Mowbray would later campaign in France. He led the defence of England's possessions in Normandy during the Hundred Years' War. He fought in Calais in 1436, and in 1437 and 1438 served as warden of the Eastern March on the Anglo-Scottish border. In the early 1430s he became the bitter rival of William de la Pole, Earl (later Duke) of Suffolk. In the early years of the Wars of the Roses in the 1450s he defended King Henry against two rebellions by Richard, Duke of York. Eventually Mowbray drifted towards York, with whom he shared an enmity towards de la Pole. In March 1461, Mowbray was instrumental in King Edward IV's victory at the Battle of Towton, bringing reinforcements late in the combat.