Duke of Clarence of King Edward IV, in 1461. The Duke forfeited his title in 1478, after he had been convicted of treason against his brother. He allegedly met his end (according to William Shakespeare) by being drowned in a butt of Malmsey. A fourth creation in England was suggested and planned to take effect; the title of Duke of Clarence was going to be given to Lord Guilford Dudley, husband of Lady Jane Grey, upon her coronation, as she declined to make her husband king consort. However, she was deposed before this could take effect. Two double dukedoms, of Clarence and St
Isabel Neville, Duchess of Clarence to England's heir presumptive, George Plantagenet, 1st Duke of Clarence, the brother of both King Edward IV and Richard, Duke of Gloucester (later Richard III). The king opposed the marriage as it would bring the already powerful Earl of Warwick too close to the throne. However the ceremony took place in secret at Calais on 11 July 1469, conducted by Isabel Neville's uncle George Neville, archbishop of York. Following their marriage Clarence joined forces with Warwick and allied with the Lancastrians led by Margaret of Anjou, queen consort to Henry VI. After Isabel Neville's sister Anne was married to Edward