of Wakefield and his head set on display at Micklegate Bar along with those of Edmund, Earl of Rutland, and Richard Neville, Earl of Salisbury, who had been captured and beheaded. The Scottish queen Mary of Guelders provided Margaret with support but London welcomed York's son Edward, Earl of March and Parliament confirmed that Edward should be made king. He was crowned after consolidating his position with victory at the Battle of Towton. Edward's preferment of the former Lancastrian-supporting Woodville family, following his marriage to Elizabeth Woodville, led Warwick and Clarence to help Margaret depose Edward and return Henry to the throne. Edward and Richard, Duke of Gloucester, fled, but on their return, Clarence switched sides at the Battle of Barnet, leading to the death of the Neville brothers. The subsequent Battle of Tewkesbury brought the demise of the last of the male line of the Beauforts. The battlefield casualty of Edward of Westminster, Prince of Wales, and the later probable murder of Henry VI extinguished the House of Lancaster. Edward IV By the mid-1470s, the victorious House of York looked safely established, with seven living male princes: Edward IV, his two sons, his brother George and George's son, his brother Richard and Richard's son. Edward and Elizabeth Woodville themselves had ten children, seven of whom survived him: Elizabeth (1466–1503)queen consort to Henry VII of England Mary (1467–1482) Cecily (1469–1507)initially married John Welles, 1st Viscount Welles, and later married Thomas Kyme (or Keme) following John's death. Edward (1470–c. 1483)briefly succeeded his father as King Edward V. Margaret (1472; died that year) Richard (1473–c. 1483) Anne (1475–1511)married Thomas Howard George (1477–1479) Catherine of York (1479–1527)married William Courtenay, 1st Earl of Devon. Bridget of York (1480–1517)became a nun possibly had an illegitimate daughter called Agnes of Eltham Princes in the Tower and Richard III Dynastic infighting and misfortune quickly brought about the demise of the House of York. George Plantagenet, 1st Duke of Clarence, plotted against his brother and was executed. Following Edward's premature death in 1483, the Three Estates of the Realm, assembled in an informal Parliament, declared Edward's two sons illegitimate on the grounds of an alleged prior marriage to Lady Eleanor Talbot, leaving Edward's marriage invalid. Richard III ascended the throne, and the Princes in the Tower's fate is unclear. Richard's son predeceased him and Richard was killed in 1485 after an invasion of foreign mercenaries led by Henry