| Dukedom of Montrose | |
|---|---|
Arms: Quarterly, 1st and 4th: Or on a Chief Sable three Escallops Or (Graham); 2nd and 3rd: Argent three Roses Gules barbed and seeded proper (Montrose). Crest: An Eagle wings hovering Or preying on a Stork on its back proper, Alias: A Falcon proper, beaked and armed or, killing a stork argent, armed gules. Supporters: On either side a Stork Argent beaked and membered Gules. | |
| Creation date | 1707 |
| Creation | Second |
| Created by | Anne I |
| Peerage | Peerage of Scotland |
| First holder | James Graham, 4th Marquess of Montrose |
| Present holder | James Graham, 8th Duke |
| Heir apparent | James Graham, Marquess of Graham |
| Remainder to | The 1st Duke's heirs male of the body lawfully begotten, heirs female, and heirs of nomination |
| Subsidiary titles | Marquess of Montrose Marquess of Graham and Buchanan Earl of Montrose Earl of Kincardine Earl Graham Viscount Dundaff Lord Graham Lord Graham and Mugdock Lord Aberruthven, Mugdock and Fintrie Baron Graham, of Belford |
| Seat | Auchmar House |
| Former seat | Buchanan Castle |
| Motto | N'oubliez ("Forget not") |
Duke of Montrose (named for Montrose, Angus) is a title that has been created twice in the Peerage of Scotland. The title was created anew in 1707, for James Graham, 4th Marquess of Montrose, great-grandson of famed James Graham, 1st Marquess of Montrose. Montrose was elevated as a reward for his important support of the Act of Union. It has remained since then in the Graham family, tied to the chieftainship of Clan Graham.
The Duke's subsidiary titles are: Marquess of Montrose (created 1644), Marquess of Graham and Buchanan (1707), Earl of Montrose (1503), Earl of Kincardine (1644), Earl Graham (1722), Viscount Dundaff (1707), Lord Graham (1445), Lord Graham and Mugdock (1644), Lord Aberruthven, Mugdock and Fintrie (1707) and Baron Graham, of Belford (1722). The titles of Earl Graham and Baron Graham are in the Peerage of Great Britain; the rest are in the Peerage of Scotland. The eldest son of the Duke uses the courtesy title of Marquess of Graham and Buchanan.

The seat of the Earls and Dukes of Montrose was historically Buchanan Auld House near Drymen, Stirlingshire. The house burned down in 1852, after which James Graham, 4th Duke of Montrose oversaw the construction of Buchanan Castle on the former site of Buchanan Auld House.
Following its completion in 1858 Buchanan Castle remained as the seat of the Dukes of Montrose until 1932, when James Graham, 6th Duke of Montrose vacated the house owing to the financial burden of death duties levied on his estates following the death of the 5th Duke in 1925. After failing to find a buyer for the Castle, the house was converted into a hotel which opened in April 1933. The Duke again tried to sell the castle for £25,000 in 1949, but no buyer could be found.
In 1932 the 6th Duke of Montrose commissioned the construction of a smaller contemporary residence on the Buchanan Castle estate, which was named Auchmar House. The house, which sits on the banks of Loch Lomond, has served as the country seat of the Dukes of Montrose since Buchanan Castle was vacated as a private residence.

Through the marriage of the 6th Duke to Lady Mary Hamilton, only child of William Douglas-Hamilton, 12th Duke of Hamilton in 1906, the family came into possession of Brodick Castle on the Isle of Arran and Easton Park, Suffolk in 1895. The combined valuation of the 4,900-acre Easton Park estate and 102,000-acre Isle of Arran estates centred on Brodick Castle was £374,713 for probate purposes in 1895.
Easton Park served primarily as the residence of Lady Mary's mother, the Dowager Duchess of Hamilton, during the early 20th century, and was later used as a hospital during the First World War. The estate surrounding the house was sold for £58,000 in 1919, and the house was sold in 1922 for £11,200.
Following the death of Mary, Dowager Duchess of Montrose in 1957, her daughter Lady Jean Fforde transferred Brodick Castle to the National Trust in 1958 in lieu of death duties on her mother's estate.

In the 1883 edition of John Bateman's The Great Landowners of Great Britain and Ireland, Douglas Graham, 5th Duke of Montrose's estates were recorded as spanning 103,447 acres across Scotland, including 68,565 acres in Stirlingshire, 32,294 acres in Perthshire, and 2,588 acres in Dunbartonshire, which produced a combined annual income of £24,892.
William Graham, 2nd Duke of Montrose leased No. 41 Upper Grosvenor Street as his London residence from 1743 until his death in 1790.
His son James Graham, 3rd Duke of Montrose leased No. 25 Grosvenor Square as his London house from 1786 until his death in 1836. His widow Caroline Graham, Duchess of Montrose lived at Montrose House, Petersham from 1837 until 1847; the existing house derives its name from her period of occupancy.
James Graham, 4th Duke of Montrose leased No. 45 Belgrave Square from c. 1839; following his death in 1874, his wife Caroline Graham, Dowager Duchess of Montrose continued to live at the house until she died in 1894.
Their son Douglas Graham, 5th Duke of Montrose leased No. 41 Eaton Square from c. 1879 until 1883. He later leased No. 27 Pont Street as his London house from c. 1895 until 1904.
residence at tree and succession
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