In 1708, the 2nd Duke was created Duke of Dover (along with the subsidiary titles Marquess of Beverley and Baron Ripon) in the Peerage of Great Britain, but these titles became extinct upon the death of the 2nd Duke of Dover in 1778. In 1945, King George VI offered Winston Churchill the title of Duke of Dover, which he declined.
Several subsidiary titles are associated with the Dukedom of Queensberry, namely Marquess of Dumfriesshire (1683), Earl of Drumlanrig and Sanquhar (1682), Viscount of Nith, Tortholwald and Ross (1682) and Lord Douglas of Kilmount, Middlebie and Dornock (1682) (all in the Peerage of Scotland).
The seat of the Dukes is at Drumlanrig Castle, built by the 1st Duke of Queensberry.
Dukes of Queensberry (1684)
Other titles: Marquess of Dumfriesshire, Earl of Drumlanrig and Sanquhar, Viscount of Nith, Torthorwald and Ross and Lord Douglas of Kilmount, Middlebie and Dornock (1684)
Other titles (1st to 4th Dukes): Marquess of Queensberry (1682), Earl of Queensberry (1633), Earl of Drumlanrig and Sanquhar (1682), Viscount of Drumlanrig (1628), Viscount of Nith, Torthorwald and Ross (1682), Lord Douglas of Hawick and Tibbers (1628) and Lord Douglas of Kilmount, Middlebie and Dornock (1682)
Other titles (3rd Duke): Earl of Solway, Viscount Tibbers and Lord Douglas of Lockerby, Dalveen and Thornhill (1706)
Charles Douglas, 3rd Duke of Queensberry, 2nd Duke of Dover (1698–1778), third son of the 2nd Duke, succeeded his father due to special remainder and died without issue
Charles Douglas, Earl of Drumlanrig (1726–1756), younger son of the 3rd Duke, died without issue
Other titles (4th Duke): Earl of Ruglen (1697), Earl of March (1697), Viscount of Riccartoun (1697), Viscount of Peebles (1697), Lord Hillhouse (1697), Lord Douglas of Neidpath, Lyne and Munard (1697) and Baron Douglas, of Amesbury in the county of Wiltshire (GB, 1786)
Other titles (5th Duke onwards): Duke of Buccleuch (1663), Earl of Buccleuch (1619), Earl of Doncaster, in the county of York (En 1663, restored 1743), Earl of Dalkeith (1663), Lord Scott of Buccleuch (1606), Baron Scott of Whitchester and Eskdaill (1619), Baron Scott of Tindall, in the county of Northumberland (En 1663, restored 1743) and Lord Scott of Whitchester and Eskdale (1663)
^Debrett, John (1820). The Peerage of the United Kingdom of Great Britain & Ireland. F.C. and J. Rivington. pp. 635–639. Retrieved 21 November 2016.
^James Douglas, 3rd Marquess of Queensberry, a homicidal maniac, was excluded from the line of succession to the Dukedoms of Queensberry and Dover when his father — the 2nd Duke of Queensberry — surrendered all of his titles except the Marquessate and its subsidiary titles back to the Crown and obtained a new grant with the same precedence for the surrendered titles that altered the succession to his second son and then the heirs male and female of the 1st Earl of Queensberry. The succession of the Marquessate continued in remainder to the heirs male of the 1st Earl of Queensberry.