Duke of Clarence is a substantive title which has been traditionally awarded to junior members of the British Royal Family. All three creations were in the Peerage of England. The title was first granted to Lionel of Antwerp, the second son of King Edward III, in 1362, as he had married a de Clare heiress with estates including Clare in Suffolk. Since he died without sons, the title became extinct. The title was again created in favour of Thomas of Lancaster, the second son of King Henry IV, in 1412. Upon his death, too, the title became extinct. The last creation in the Peerage of England was for George Plantagenet, brother 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 by being drowned in a butt of Malmsey (according to William Shakespeare). 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. However, she was deposed before this could take effect. Two double dukedoms, of Clarence and St Andrews and of Clarence and Avondale, were later created for British royal princes. The title also took the form of an earldom for Queen Victoria's son Prince Leopold, Duke of Albany, and his son Prince Charles Edward, the Clarence earldom being a subsidiary title. Nomenclature The title does not refer to the minor River Clarence in Pas-de-Calais, northern France, but is said by Polydore Vergil to originate from the manor and castle of Clare in Suffolk, the caput of a feudal barony, which was held by Lionel of Antwerp, 1st Duke of Clarence, in right of his wife, the heiress Elizabeth de Burgh, 4th Countess of Ulster, ultimate descendant and heiress of the previous holder, the de Clare family; Clare was among the many estates which she brought to her husband. After the Union of the Crowns in 1603, the holders of the title were also given titles named after Scottish places: St Andrews and Avondale. Duke of Clarence, first creation (1362) The title was first created for Lionel, a younger son of King Edward III who in 1352 had married Elizabeth de Burgh, 4th Countess of Ulster, the sole