Issue of Edward III of England the Yorks left Richard III as king, supported and then betrayed by his cousin Buckingham, the descendant of Thomas of Woodstock. Finally, the Yorks were dislodged by the remaining Lancastrian candidate, Henry VII of the House of Tudor, another descendant of John of Gaunt, who married the eldest daughter of Yorkist King Edward IV. Edward, the Black Prince (15 June 1330 – 8 June 1376), Duke of Cornwall, Prince of Wales. The eldest son of Edward III who predeceased his father and never became king. Edward's only surviving child was Richard II who ascended to the throne but produced no
Richard III of England for Edward's eldest son and successor, the 12-year-old Edward V. Arrangements were made for Edward's coronation on 22 June 1483; but, before the young king could be crowned, the marriage of his parents was declared bigamous and therefore invalid, making their children officially illegitimate and barring them from inheriting the throne. On 25 June, an assembly of Lords and commoners endorsed a declaration to this effect and proclaimed Richard the rightful king. The following day, Richard III began his reign, and he was crowned on 6 July 1483. The young princes, Edward and his younger brother Richard, Duke of York,