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 his birthday, he was made Constable of Gloucester and Corfe Castles and Admiral of England, Ireland and Aquitaine and appointed Governor of the North, becoming the richest and most powerful noble in England. On 17 October 1469, he was made Constable of England. In November, he replaced William Hastings, 1st Baron Hastings, as Chief Justice of North Wales. The following year, he was appointed Chief Steward and Chamberlain of Wales. On 18 May 1471, Richard was named Great Chamberlain and Lord High Admiral of England. Other positions followed: High Sheriff of Cumberland for life, Lieutenant of the North and Commander-in-Chief