Richard Neville, 16th Earl of Warwick KG (22 November 1428 – 14 April 1471), known as Warwick the Kingmaker, was an English nobleman, administrator, and military commander. The son of Richard Neville, 5th Earl of Salisbury, Warwick was the wealthiest and most powerful English peer of his age, with political connections that went beyond the country's borders. One of the leaders in the Wars of the Roses, originally on the Yorkist side but later switching to the Lancastrian side, he was instrumental in the deposition of two kings, which led to his epithet of "Kingmaker".
Through fortunes of marriage and inheritance, Warwick emerged in the 1450s at the centre of English politics. Originally he was a supporter of King Henry VI; however, a territorial dispute with the Duke of Somerset led him to collaborate with Richard, Duke of York, in opposing the king. From this conflict he gained the strategically valuable post of Captain of Calais, a position that benefited him greatly in the years to come. The political conflict later turned into full-scale rebellion, where in battle York was slain, as was Warwick's father Salisbury. York's son, however, later triumphed with Warwick's assistance, and was crowned King Edward IV. Edward initially ruled with Warwick's support, but the two later fell out over foreign policy and the king's choice of Elizabeth Woodville as his wife. After a failed plot to crown Edward's brother, George, Duke of Clarence, Warwick instead restored Henry VI to the throne. The triumph was short-lived however: on 14 April 1471 Warwick was defeated by Edward at the Battle of Barnet, and killed.