William Hervey d. 1538 |
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John Hervey d. 1556 | | | | | | Nicholas Hervey lifespan unknown |
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William Hervey d. 1592 | | | | | | Henry Hervey lifespan unknown | | Jane Thomas lifespan unknown |
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| | | | | | | | | | | | | Baronet Hervey, of St. Martin's in the Fields, co. Middlesex, 1619 Baron Hervey of Rosse, co. Wexford, 1620 Baron Hervey of Kidbrooke, co. Kent, 1627/1628 |
John Hervey d. 1630 | | Robert Jermyn 1539–1614 | | | | | | William Hervey d. 1642 1st Baron Hervey of Rosse and of Kidbrooke, and Baronet Hervey |
| | | | | | | | | | | | | | | Baron Hervey of Ross and of Kidbrooke and Baronet Hervey extinct, 1642 |
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William Hervey d. 1660 | | | | | | | Thomas Jermyn 1573–1645 |
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| | | | | | | | | | | | | | | Baron Jermyn of St Edmundsbury, 1643 Earl of St Albans, 1660 |
Thomas Hervey 1625–1694 | | Susan | | Thomas Jermyn 1604–1659 | | Henry Jermyn 1605–1684 1st Earl of St Albans and Baron Jermyn |
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| | | | | | | | | | | | | | | Earldom of St Albans extinct, 1684 |
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Baron Hervey of Ickworth, 1703 Earl of Bristol, 1714 | | | | | | | | | | | Baron Dover, 1685 |
John Hervey 1665–1751 1st Earl of Bristol and Baron Hervey | | | | | | Thomas Jermyn 1633–1703 2nd Baron Jermyn | | Henry Jermyn c. 1636–1708 1st Baron Dover, 3rd Baron Jermyn |
| | | | | | | | | | | | | | Baronies Dover and Jermyn extinct, 1708 |
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Carr Hervey 1691–1723 styled Lord Hervey | | John Hervey 1696–1743 2nd Baron Hervey |
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George William Hervey 1721–1775 2nd Earl of Bristol and Baron Hervey | | Augustus John Hervey 1724–1779 3rd Earl of Bristol and Baron Hervey | | Frederick Augustus Hervey 1730–1803 4th Earl of Bristol and Baron Hervey |
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| | | | | | | | | | | | | | | | | | | Marquess of Bristol and Earl Jermyn, 1826 |
| | | | Augustus Hervey b. 1747 | | George Hervey 1755–c. 1764 | | John Augustus Hervey 1757–1796 styled Lord Hervey | | Frederick William Hervey 1769–1859 1st Marquess of Bristol and Earl Jermyn 5th Earl of Bristol and Baron Hervey |
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| | | | | | | | | | | | | | | | Frederick William Hervey 1800–1864 2nd Marquess of Bristol and Earl Jermyn 6th Earl of Bristol and Baron Hervey |
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| | | | | | | | | | | | Frederick William John Hervey 1834–1907 3rd Marquess of Bristol and Earl Jermyn 7th Earl of Bristol and Baron Hervey | | Augustus Henry Charles Hervey 1837–1875 |
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Capt. Charles Hervey 1862–1893 | | Frederick William Fane Hervey 1863–1951 4th Marquess of Bristol and Earl Jermyn 8th Earl of Bristol and Baron Hervey | | Walter Hervey 1865–1948 styled Lord Hervey [a] | | Rev. Manners Hervey 1866–1944 styled Lord Hervey [a] | | Herbert Arthur Robert Hervey 1870–1960 5th Marquess of Bristol and Earl Jermyn 9th Earl of Bristol and Baron Hervey |
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| | | | | | | | | | | | | | | | Victor Frederick Cochrane Hervey 1915–1985 6th Marquess of Bristol and Earl Jermyn 10th Earl of Bristol and Baron Hervey |
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| | | | | | | | Frederick William John Augustus Hervey 1954–1999 7th Marquess of Bristol and Earl Jermyn 11th Earl of Bristol and Baron Hervey | | Frederick William Charles Nicholas Wentworth Hervey 1961–1998 | | Frederick William Augustus Hervey b. 1979 8th Marquess of Bristol and Earl Jermyn 12th Earl of Bristol and Baron Hervey |
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| | | | | | | | | | | | | | | | Frederick Hervey b. 2022 styled Earl Jermyn |