| | | | Lord Hay of Yester, 1488 |
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| Mariot Lindsay | | John Hay
(d. c. 1508)
1st Lord Hay of Yester | | Elizabeth Cunningham
(d. 1529) |
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Thomas Hay
(d. 1491)
Master of Yester | | John Hay
(d. 1513)
2nd Lord Hay of Yester |
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Thomas Hay
(d. c. 1508)
Master of Yester | | John Hay
(d. 1543)
3rd Lord Hay of Yester |
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| | | | John Hay
(d. c. 1555–56)
4th Lord Hay of Yester |
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| | | | William Hay
(1538–1586)
5th Lord Hay of Yester |
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| | | | William Hay
(c. 1561-1590/91)
6th Lord Hay of Yester | | James Hay
(1564-1608/09)
7th Lord Hay of Yester |
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| | | | | | | | Earl of Tweeddale, 1646 |
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| | | | | | | | John Hay
1st Earl of Tweeddale, 8th Lord Hay of Yester |
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| | | | | | | | Marquess of Tweeddale, Earl of Gifford, and Viscount of Walden, 1694 |
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| | | | | | | | John Hay
(1626–1697)
1st Marquess of Tweeddale, Earl of Gifford, and Viscount Walden, 2nd Earl of Tweeddale, 9th Lord Hay of Yester |
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| | | | | | | | John Hay
(1645–1713)
2nd Marquess of Tweeddale, Earl of Gifford, and Viscount Walden, 3rd Earl of Tweeddale, 10th Lord Hay of Yester |
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Charles Hay
(c. 1670–1715)
3rd Marquess of Tweeddale, Earl of Gifford, and Viscount Walden, 4th Earl of Tweeddale, 11th Lord Hay of Yester | | John Hay
(d. 1706) | | | | | | William Hay
(d. 1723) |
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John Hay
(c. 1695–1762)
4th Marquess of Tweeddale, Earl of Gifford, and Viscount Walden, 5th Earl of Tweeddale, 12th Lord Hay of Yester | | Charles Hay
(d. 1760) | | George Hay
(c. 1700–1787)
6th Marquess of Tweeddale, Earl of Gifford, and Viscount Walden, 7th Earl of Tweeddale, 14th Lord Hay of Yester | | John Hay of Newhall
(d. 1765) |
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George Hay
(1758–1770)
5th Marquess of Tweeddale, Earl of Gifford, and Viscount Walden, 6th Earl of Tweeddale, 13th Lord Hay of Yester | | | | | | William Hay
(d. 1761)
Younger of Newhall | | George Hay
(1739–1804)
7th Marquess of Tweeddale, Earl of Gifford, and Viscount Walden, 8th Earl of Tweeddale, 15th Lord Hay of Yester |
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| | | | George Hay
(1787–1876)
8th Marquess of Tweeddale, Earl of Gifford, and Viscount Walden, 9th Earl of Tweeddale, 16th Lord Hay of Yester | | | | | | | | | | | | | | James Hay[n 1]
(1788–1862) |
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| | | | | | | | | | Baron Tweeddale of Yester in the County of Haddington, 1881 | | | | | | | | | | | | | |
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George Hay
(1822–1862)
styled Earl of Gifford | | Arthur Hay
(1824–1878)
9th Marquess of Tweeddale, Earl of Gifford, and Viscount Walden, 10th Earl of Tweeddale, 17th Lord Hay of Yester | | William Montagu Hay
(1826–1911)
10th Marquess of Tweeddale, Earl of Gifford, and Viscount Walden, 11th Earl of Tweeddale, 18th Lord Hay of Yester, 1st Baron Tweeddale | | | | | | | | | | James Gordon Hay
(1815–1883) |
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William George Montagu Hay
(1884–1967)
11th Marquess of Tweeddale, Earl of Gifford, and Viscount Walden, 12th Earl of Tweeddale, 19th Lord Hay of Yester, 2nd Baron Tweeddale | | Arthur Vincent Hay
(1886–1914) | | Edward Douglas John Hay
(1888–1944) | | | | | | | | | | Malcolm Vivian Hay of Seaton
(1881–1962) |
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| | | | Sonia Mary Peake
(d. 2009) | | David George Montagu Hay
(1921–1979)
12th Marquess of Tweeddale, Earl of Gifford, and Viscount Walden, 13th Earl of Tweeddale, 20th Lord Hay of Yester, 3rd Baron Tweeddale | | Nella Doreen Dutton
(d. 2004) | | | | | | James Malcolm Hay of Seaton
(1907–1987) |
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Edward Douglas John Hay
(1947–2005)
13th Marquess of Tweeddale, Earl of Gifford, and Viscount Walden, 14th Earl of Tweeddale, 21st Lord Hay of Yester, 4th Baron Tweeddale | | Charles David Hay
(b. 1947)
14th Marquess of Tweeddale, Earl of Gifford, and Viscount Walden, 15th Earl of Tweeddale, 21st Lord Hay of Yester, 5th Baron Tweeddale | | Alistair James Montagu Hay
(b. 1955) | | Andrew Arthur George Hay
(b. 1959)[n 2] | | Lord Hamish David Montagu Hay
(b. 1959) | | Malcolm Charles Hay of Seaton[n 1]
(b. 1956) |
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| | | | | | | | Heir Presumptive | | | | | | | | | | | | | | | |
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| | | | | | | | | | | | Angus Hay
(b. 1991) | | Rory Hay
(b. 1993) | | James Malcolm Douglas Hay
(b. 1985) |
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| | | | | | | | | | | | | | | | | | | | Gilbert Christopher Malcolm Hay
(b. 2021) |
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