| | | | | | | | Ralph Botevile
[9] |
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| | | | | | | | Thomas Thynne
[9] | |
William Thynne
[9]
[10]
d. 1546 |
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John Thynne of Longleat
[11]
c. 1515–1580 | |
Francis Thynne
[10]
c. 1544–1608 |
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John Thynneof Longleat
[12] 1555–1604 | |
Charles Thynne
[13]
c. 1568–1652 |
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Thomas Thynne of Longleat
[14]
c. 1578–1639 |
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Baronet of Caus Castle, of Kempsford in the County of Gloucester, 1641 |
James of Longleat
[15] 1605–1670 | |
Thomas of Richmond
[16]
d. 1669 | | Henry Frederick Thynne 1615–1680 1st Baronet of Kempsford |
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Baron Thynne, 1680
Viscount Weymouth, 1682 | | | | | | | | | | |
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Thomas of Longleat,
[17] 1648–1682 | |
Thomas Thynne
[18] 1640–1714 inherited Longleat, 1682 1st Viscount Weymouth and Baron Thynne, 2nd Baronet of Kempsford | | James Thynne of Buckland
d. 1709 | | Henry Thynne Frederick
d. 1705 |
| | | | | | | | | | | | | unmarried | | | | | |
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Henry Thynne
[19] 1675–1708 | | | | | | Thomas Thynne
d. 1710 |
| | | | | | | | two daughters but no sons | | | | | | | | | |
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Thomas Thynne
[20] 1710–1751 2nd Viscount Weymouth and Baron Thynne, 3rd Baronet of Kempsford |
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Marquess of Bath, 1789 | |
Baron Carteret (2nd creation), 1784 |
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Thomas Thynne
[21] 1734–1796 1st Marquess of Bath, 3rd Viscount Weymouth and Baron Thynne, 4th Baronet of Kempsford | |
Henry Carteret
[22] 1735–1826 1st Baron Carteret |
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Thomas Thynne
[23] 1765–1837 2nd Marquess of Bath, 4th Viscount Weymouth and Baron Thynne, 5th Baronet of Kempsford | |
George Thynne 1770–1838 2nd Baron Carteret | |
John Thynne 1772–1849 3rd Baron Carteret |
| | | | | | | | | | | | | | | | | Baron Carteret extinct, 1849 |
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Henry Thynne
[24] 1797–1837 3rd Marquess of Bath, 5th Viscount Weymouth and Baron Thynne, 6th Baronet of Kempsford | |
Edward Thynne 1807–1884 | | Lady
Charlotte Anne Thynne 1811–1895 marr.:
Walter Montagu Douglas Scott,
Duke of Buccleuch and had issue. |
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John Thynne
[25] 1831–1896 4th Marquess of Bath, 6th Viscount Weymouth and Baron Thynne, 7th Baronet of Kempsford | |
Henry Thynne 1832–1904 |
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Thomas Thynne 1862–1946 5th Marquess of Bath, 7th Viscount Weymouth and Baron Thynne, 8th Baronet of Kempsford | |
Ulric Oliver Thynne 1871–1957 |
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Henry Thynne 1905–1992 6th Marquess of Bath, 8th Viscount Weymouth and Baron Thynne, 9th Baronet of Kempsford |
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Thomas Timothy Thynne 1929–1930 | |
Alexander George Thynn 1930–2020 7th Marquess of Bath, 9th Viscount Weymouth and Baron Thynne, 10th Baronet of Kempsford | | Christopher John Thynne 1934–2017 | | Valentine Charles Thynne 1937–1979 |
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Ceawlin Thynn
b. 1974 8th Marquess of Bath, 10th Viscount Weymouth and Baron Thynne, 11th Baronet of Kempsford | | | | | | Lucien Henry Valentine Thynne
b. 1965 |
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| | | | John Alexander Ladi Thynn
b. 2014 styled Viscount Weymouth |