The Duke of Rothesay reference article from the English Wikipedia on 24-Apr-2004
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Duke of Rothesay

The title Duke of Rothesay is the official title possessed by the Heir Apparent to the throne of Scotland. Though a separate Scottish throne no longer exists and has not done so since the Act of Union 1707 which merged the Kingdoms of Scotland and England to form the Kingdom of Great Britain (later known as the United Kingdom after a further merger with the Kingdom of Ireland), the title is still held by the heir to the throne of the United Kingdom, as in effect the Scottish equivalent of the title Prince of Wales, which traditionally belonged to the Heir Apparent of the throne of England.

The other Scottish titles of the heir apparent are: Earl of Carrick, Baron of Renfrew (the Barony being a feudal Barony, and not one of peerage), Lord of the Isles and Great Steward of Scotland.

The title is currently held by HRH Charles, Prince of Wales (more correctly styled simply as HRH The Prince of Wales) and used by the Prince when in Scotland. His formal Scottish style is HRH The Prince Charles, Duke of Rothesay.

Holders of the Dukedom of Rothesay, with the processes by which they became Dukes of Rothesay and by which they ceased to hold the title:

Duke of Rothesay Parent From To
David Stuart Robert III 1398 (charter) 1402 (death)
James Stuart Robert III 1402 (death of brother David) 1406 (acceded as James I)
Alexander Stuart James I 1430 (birth) 1430 (death)
James Stuart James I 1430 (death of brother Alexander) 1437 (acceded as James II)
James Stuart James II 1452 (birth) 1460 (acceded as James III)
James Stuart James III 1473 (birth) 1473 (acceded as James IV)
James Stuart James IV 1507 (birth) 1508 (death)
Arthur Stuart James IV 1509 (birth) 1510 (death)
James Stuart James IV 1512 (birth) 1513 (acceded as James V)
James Stuart James V 1540 (birth) 1541 (death)
James Stuart Mary I 1566 (birth) 1567 (acceded as James VI)
Henry Frederick Stuart James VI 1594 (birth) 1612 (death)
Charles Stuart, Duke of York James I 1612 (death of brother Henry) 1625 (acceded as Charles I)
Charles James Stuart Charles I 1629 (birth) 1629 (death)
Charles Stuart Charles I 1630 (birth) 1649 (acceded as Charles II)
James Francis Edward Stuart James II 1688 (birth) 1689 (father's deposition)
George Augustus George I 1714 (father's accession) 1727 (acceded as George II)
Frederick Lewis George II 1727 (father's accession) 1751 (death)
George Augustus Frederick George III 1762 (birth) 1820 (acceded as George IV)
HRH Prince Albert Edward Victoria 1841 (birth) 1901 (acceded as Edward VII)
HRH Prince George Edward VII 1901 (father's accession) 1910 (acceded as George V)
HRH Prince Edward George V 1910 (father's accession) 1936 (acceded as Edward VIII)
HRH Prince Charles of Edinburgh Elizabeth II 1952 (mother's accession)  
HRH Prince William of Wales next next