Sir Walter Scott of Branxholme and Buccleuch (died 1552) distinguished himself at the Battle of Pinkie Cleugh (1547).

The Duke also holds the two subsidiary titles of the attainted Dukedom of Monmouth, namely Earl of Doncaster (1663) and Baron Scott of Tindale (1663) (both in the Peerage of England), and several subsidiary titles 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).

Until 1835, the Dukes also held lands in the West Riding of Yorkshire and the ancient title of Lord of Bowland.

Its historic London residence was Montagu House, Whitehall, now demolished and replaced by the Ministry of Defence.

William Montagu Douglas Scott, The Earl of Dalkeith, who became the 7th Duke of Buccleuch was elected President of St. Andrew's Ambulance Association in 1908.

[7] The heir apparent is the present holder's son Walter John Francis Montagu Douglas Scott, Earl of Dalkeith (b.