| | | | | | | | Lord Graham, 1445 | |
| | | | | | | | Patrick Graham
(d. c. 1466)
1st Lord Graham | |
Lord Brechin and Navar, 1472
Duke of Montrose (1st creation), 1488 | | | | | | | | | | |
David Lindsay
(1440–1495)
1st Duke of Montrose and Lord Brechin and Navar, 4th Earl of Crawford | | | | | | William Graham
(d. 1472)
2nd Lord Graham | |
Dukedom forfeit, 1488
Dukedom restored, 1489
Dukedom extinct, 1495 | | | | | | | | | | |
| | | | | | | | Earl of Montrose, 1503 | |
| | | | | | | | William Graham
(1464–1513)
1st Earl of Montrose, 3rd Lord Graham | |
| | | | | | | | | | | | |
| | | | | | | | William Graham
(1492–1571)
2nd Earl of Montrose, 4th Lord Graham | |
| | | | | | | | | | | | |
| | | | | | | | Robert Graham
(d. 1547)
styled Master of Montrose | |
| | | | | | | | | | | | |
| | | | | | | | John Graham
(1548–1608)
3rd Earl of Montrose, 5th Lord Graham | |
| | | | | | | | | | | | |
| | | | | | | | John Graham
(1573–1626)
4th Earl of Montrose, 6th Lord Graham | |
| | | | | | | | | | | | |
| | | | | | | | Marquess of Montrose, Earl of Kincardine, and Lord Graham and Mugdock, 1644 | |
| | | | | | | | James Graham
(1612–1650)
1st Marquess of Montrose, Earl of Kincardine, and Lord Graham and Mugdock,
5th Earl of Montrose, 7th Lord Graham | | See also: Earls of Kincardine family tree for the 1647 creation | |
| | | | | | | | | | | | | | | | | | |
| | | | John Graham
(1630–1645)
styled Earl of Kincardine | | James Graham
(1633–1669)
2nd Marquess of Montrose, Earl of Kincardine, and Lord Graham and Mugdock,
6th Earl of Montrose, 8th Lord Graham | |
| | | | | | | | | | | | |
| | | | | | | | James Graham
(1657–1684)
3rd Marquess of Montrose, Earl of Kincardine, and Lord Graham and Mugdock,
7th Earl of Montrose, 9th Lord Graham | |
| | | | | | | | | | | | |
| | | | | | | | Duke of Montrose (2nd creation), Marquess of Graham and Buchanan, Viscount Dundaff, and Lord Aberuthven, Mugdock and Fintrie, 1707
Earl Graham and Baron Graham of Belford in the County of Northumberland, 1722 | |
| | | | | | | | James Graham
(1682–1742)
1st Duke of Montrose, Marquess of Graham and Buchanan, Earl Graham, Viscount Dundaff, Lord Aberuthven, Mugdock and Fintrie, and Baron Graham of Belford
4th Marquess of Montrose, Earl of Kincardine, and Lord Graham and Mugdock,
8th Earl of Montrose, 10th Lord Graham | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
James Graham
(1703–1704)
styled Earl of Kincardine | | David Graham
(1705–1731) | | William Graham
(1712–1790)
2nd Duke of Montrose, Marquess of Graham and Buchanan, Earl Graham, Viscount Dundaff, Lord Aberuthven, Mugdock and Fintrie, and Baron Graham of Belford
5th Marquess of Montrose, Earl of Kincardine, and Lord Graham and Mugdock,
9th Earl of Montrose, 11th Lord Graham | | George Graham
(1715–1747) | |
| | | | | | | | | | | | |
| | | | | | | | James Graham
(1755–1836)
3rd Duke of Montrose, Marquess of Graham and Buchanan, Earl Graham, Viscount Dundaff, Lord Aberuthven, Mugdock and Fintrie, and Baron Graham of Belford
6th Marquess of Montrose, Earl of Kincardine, and Lord Graham and Mugdock,
10th Earl of Montrose, 12th Lord Graham | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
James Graham
(1786–1787)
Earl of Kincardine | | Georgiana Finch-Hatton
(1791–1835)
Countess of Winchilsea | | James Graham
(1799–1874)
4th Duke of Montrose, Marquess of Graham and Buchanan, Earl Graham, Viscount Dundaff, Lord Aberuthven, Mugdock and Fintrie, and Baron Graham of Belford
7th Marquess of Montrose, Earl of Kincardine, and Lord Graham and Mugdock,
11th Earl of Montrose, 13th Lord Graham | | Lucy Herbert
(1793–1875)
Countess of Powis | |
| | | | | | | | | | | | | | | | | | | | | | | |
James Graham
(1845–1846)
styled Marquess of Graham | | James Graham
(1847–1872)
styled Marquess of Graham | | Douglas Graham
(1852–1925)
5th Duke of Montrose, Marquess of Graham and Buchanan, Earl Graham, Viscount Dundaff, Lord Aberuthven, Mugdock and Fintrie, and Baron Graham of Belford
8th Marquess of Montrose, Earl of Kincardine, and Lord Graham and Mugdock,
12th Earl of Montrose, 14th Lord Graham | |
| | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | James Graham
(1878–1954)
6th Duke of Montrose, Marquess of Graham and Buchanan, Earl Graham, Viscount Dundaff, Lord Aberuthven, Mugdock and Fintrie, and Baron Graham of Belford
9th Marquess of Montrose, Earl of Kincardine, and Lord Graham and Mugdock,
13th Earl of Montrose, 15th Lord Graham | | 2 younger daughters and 2 younger sons | |
| | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | James Angus Graham
(1907–1992)
7th Duke of Montrose, Marquess of Graham and Buchanan, Earl Graham, Viscount Dundaff, Lord Aberuthven, Mugdock and Fintrie, and Baron Graham of Belford
10th Marquess of Montrose, Earl of Kincardine, and Lord Graham and Mugdock,
14th Earl of Montrose, 16th Lord Graham | | Jean Fforde
(1920–2017) | |
| | | | | | | | | | | | | | | | | | |
| | | | Fiona Mary Graham
(1932–2017) | | James Graham
(b. 1935)
8th Duke of Montrose, Marquess of Graham and Buchanan, Earl Graham, Viscount Dundaff, Lord Aberuthven, Mugdock and Fintrie, and Baron Graham of Belford
11th Marquess of Montrose, Earl of Kincardine, and Lord Graham and Mugdock,
15th Earl of Montrose, 17th Lord Graham | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | Hermione Elizabeth Graham
(b. 1971) | | James Graham
(b. 1973)
styled Marquess of Graham | | Ronald John Christopher Graham
(b. 1975) | |
| | | | | | | | | | Heir apparent to the Dukedom of Montrose | | | | | | | | | | | |
John Graham Thornhill
(b. 1998) | | Grace Graham Thornhill
(b. 1998) | | | | | | 2 sons | |
|
