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c. 1337–1406
King of Scotland |
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| Lord Montgomerie, 1448 | | | | | | | | | | | | | | | | | |
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Alexander Montgomerie
d. 1470
1st Lord Montgomerie | | | | | | | | | | James Kennedy
Younger of Dunure | | Mary Stewart |
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Alexander Montgomerie
1404–1452
styled Master of Montgomerie | | Elizabeth | | | | | | | Gilbert Kennedy
c. 1406 – c. 1480
1st Lord Kennedy | | James Kennedy
c. 1408–1465
Archbishop of St Andrews |
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Alexander Montgomerie
d. c. 1483
2nd Lord Montgomerie | | Catherine | | Colin Campbell
c. 1433–1493
1st Earl of Argyll | | | John Kennedy
1454–1508
2nd Lord Kennedy |
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| Earl of Eglinton, 1506 | | | | | | | | | | | | Earl of Cassilis, 1234 |
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Hugh Montgomerie
c. 1460–1545
1st Earl of Eglinton, 3rd Lord Montgomerie | | Helen | | Archibald Campbell
d. 1513
2nd Earl of Argyll | | David Kennedy
After 1463–1513
1st Earl of Cassilis, 3rd Lord Kennedy |
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John Montgomerie
d. 1520 | | | | | | Isabel | | Gilbert Kennedy
1494–1527
2nd Earl of Cassilis, 4th Lord Kennedy |
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Hugh Montgomerie
d. 1546
2nd Earl of Eglinton, 4th Lord Montgomerie | | | | | | | | | | Gilbert Kennedy
1515–1558
3rd Earl of Cassilis, 5th Lord Kennedy |
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Hugh Montgomerie
c. 1531–1585
3rd Earl of Eglinton, 5th Lord Montgomerie | | | | | | | | | | Gilbert Kennedy
c. 1541–1576
4th Earl of Cassilis, 6th Lord Kennedy | | | | | | Thomas Kennedy
c. 1549–1602
styled Master of Cassilis |
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Hugh Montgomerie
1563–1586
4th Earl of Eglinton, 6th Lord Montgomerie | | Margaret | | Robert Seton
1553–1603
1st Earl of Winton | | John Kennedy
1575–1615
5th Earl of Cassilis, 7th Lord Kennedy | | Hew Kennedy
styled Master of Cassilis | | Alexander Kennedy
d. 1652 |
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Hugh Montgomerie
d. 1612
5th Earl of Eglinton, 7th Lord Montgomerie | | Alexander Montgomerie
1588–1661
6th Earl of Eglinton, 8th Lord Montgomerie | | | | | | John Kennedy
d. 1668
6th Earl of Cassilis, 8th Lord Kennedy | | | | | | John Kennedy
d. 1665 | | Alexander Kennedy
d. 1698 |
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Hugh Montgomerie
1613–1669
7th Earl of Eglinton, 9th Lord Montgomerie | | | | | | James Montgomerie of Coylsfield
d. 1675 | | John Kennedy
1653–1701
7th Earl of Cassilis, 9th Lord Kennedy | | | | | | | | | | | | | | |
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| | | | | | | | | | | | | | | | | | | Kennedy Baronet of Culzean, in the County of Ayr, 1682 | | | | | | | | | |
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Alexander Montgomerie
d. 1701
8th Earl of Eglinton, 10th Lord Montgomerie | | | | | | Hugh Montgomery | | John Kennedy
c. 1672–1700
styled Lord Kennedy | | Archibald Kennedy
d. 1710
1st Kennedy Baronet of Culzean | | | | | | | | | |
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Alexander Seton Montgomerie
c. 1660–1729
9th Earl of Eglinton, 11th Lord Montgomerie | | Susanna Montgomerie
1690–1780 | | Alexander Montgomerie
d. 1783 | | John Kennedy
1700–1759
8th Earl of Cassilis, 10th Lord Kennedy | | John Kennedy
d. 1742
2nd Kennedy Baronet of Culzean | | | | | | Archibald Kennedy
1685–1763 |
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Alexander Montgomerie
1723–1769
10th Earl of Eglinton, 12th Lord Montgomerie | | Archibald Montgomerie
1726–1796
11th Earl of Eglinton, 13th Lord Montgomerie | | Hugh Montgomerie
1739–1819
12th Earl of Eglinton, 14th Lord Montgomerie, 1st Baron Ardrossan | | John Kennedy
d. 1744
3rd Kennedy Baronet of Culzean | | Thomas Kennedy
d. 1775
9th Earl of Cassilis, 11th Lord Kennedy, 4th Kennedy Baronet of Culzean | | David Kennedy
before 1734–1792
10th Earl of Cassilis, 12th Lord Kennedy, 5th Kennedy Baronet of Culzean | | Archibald Kennedy
1720–1794
11th Earl of Cassilis, 13th Lord Kennedy |
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| | | | | | | | | | | | | | | | | | | | | | Kennedy Baronet of Culzean extinct, 1792 | | | | | |
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| | | | | | | | | | | | | | | | | | | | | | | | | | Baron Ailsa, of Ailsa in the County of Ayr, 1806
Marquess of Ailsa, 1831 |
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| | | | Mary Montgomerie
d. 1848 | | Archibald Montgomerie
1773–1814
styled Lord Montgomerie | | | | | | | | | | | | | | Archibald Kennedy
1770–1846
1st Marquess of Ailsa and Baron Ailsa, 12th Earl of Cassilis, 14th Lord Kennedy |
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| | | | | | | | | | | | | | | | | | | | | | | | | Archibald Kennedy IV
1794–1832
styled Earl of Cassilis |
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| | | | | | | | Earl of Winton (2nd creation) and Baron Seton and Tranent, 1859 | | | | | | | | | | | | | | | | | |
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| | | | | | | | Archibald William Montgomerie
1812–1861
13th Earl of Eglinton, 1st Earl of Winton and Baron Seton and Tranent, 15th Lord Montgomerie | | | | | | | | | | | | | | Archibald Kennedy
1816–1870
2nd Marquess of Ailsa and Baron Ailsa, 13th Earl of Cassilis, 15th Lord Kennedy |
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| | | | Archibald William Montgomerie
1841–1892
14th Earl of Eglinton, 2nd Earl of Winton and Baron Seton and Tranent, 16th Lord Montgomerie | | George Arnulph Montgomerie
1848–1919
15th Earl of Eglinton, 3rd Earl of Winton and Baron Seton and Tranent, 17th Lord Montgomerie | | | | | | | | | | | | | | Archibald Kennedy
1847–1838
3rd Marquess of Ailsa and Baron Ailsa, 14th Earl of Cassilis, 16th Lord Kennedy |
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| | | | | | | | Archibald Seton Montgomerie
1880–1945
16th Earl of Eglinton, 4th Earl of Winton and Baron Seton and Tranent, 18th Lord Montgomerie | | | | | | Archibald Kennedy
1872–1943
4th Marquess of Ailsa and Baron Ailsa, 15th Earl of Cassilis, 17th Lord Kennedy | | Charles Kennedy
1875–1956
5th Marquess of Ailsa and Baron Ailsa, 16th Earl of Cassilis, 18th Lord Kennedy | | Angus Kennedy
1882–1957
6th Marquess of Ailsa and Baron Ailsa, 17th Earl of Cassilis, 19th Lord Kennedy |
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| | | | | | | | Archibald William Alexander Montgomerie
1914–1966
17th Earl of Eglinton, 5th Earl of Winton and Baron Seton and Tranent, 19th Lord Montgomerie | | | | | | | | | | | | | | Archibald David Kennedy
1925–1997
7th Marquess of Ailsa and Baron Ailsa, 18th Earl of Cassilis, 20th Lord Kennedy |
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| | | | | | | | Archibald George Montgomerie
1939–2018
18th Earl of Eglinton, 6th Earl of Winton and Baron Seton and Tranent, 20th Lord Montgomerie | | | | | | | | | | | | | | | | | |
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| | | | | | | | Hugh Archibald William Montgomerie
b. 1966
19th Earl of Eglinton, 7th Earl of Winton and Baron Seton and Tranent, 21st Lord Montgomerie | | | | | | | | | | Archibald Angus "Charles" Kennedy
1956–2015
8th Marquess of Ailsa and Baron Ailsa, 19th Earl of Cassilis, 21st Lord Kennedy | | David Thomas Kennedy
b. 1958
9th Marquess of Ailsa and Baron Ailsa, 20th Earl of Cassilis, 22nd Lord Kennedy |
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| | | | | | | | Rhuridh Seton Archibald Montgomerie
b. 2007
styled Lord Montgomerie | | | | | | | | | | | | | | Archibald David Kennedy
b. 1995
styled Earl of Cassilis |
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| | | | | | | | Heir apparent to the Earldom of Eglinton | | | | | | | | | | | | | | Heir apparent to the Marquessate of Ailsa |
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