| | | | ? Douglas First Wife | | Andrew Kerr of Altonburn and Cessford | | Margaret Tweedle Second Wife |
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Walter Kerr of Cessford d. 1501 | | | | | | | | | | Thomas Ker 1st of Fiernhirst d. 1484 |
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Robert Kerr the Younger d. 1500 | | | | | | | | | | | | | |
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Andrew Kerr of Cessford d. 1526[temp 1] | | | | | | | | | | Andrew Ker of Fiernhirst d. 1545 |
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Mark Kerr d. 1584 | | | | | | Robert Ker d. 1588 | | | | | | John Ker d. 1562 |
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Lord Newbattle, 1591 Earl of Lothian (1st creation), 1606 | | | | | | | | | | | Lord Ledburgh, 1621 | | | | | | | | | | |
Mark Ker 1st Earl of Lothian (1606) 1553–1609 | | | | | | William Kerr of Ancram d. 1590 | | Andrew Ker 1st Lord Jedburgh d. c. 1633 | | William Ker | | James Ker of Craling d. 1645 |
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| | | | | | | | | Earl of Ancram and Lord Kerr of Nisbet, Langnewtoun and Dolphinstoun, 1633 | | | | | | | | | | | | | | |
Robert Kerr 2nd Earl of Lothian (1606) d. 1624 | | Elizabeth Murray (First Wife) | | Robert Kerr 1st Earl of Ancram 1578–1654[temp 2] | | Anne Portman (Second Wife) | | Alexander Ker de jure 2nd Lord Jedburgh (c. 1598-c. 1650) | | | | | |
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Lordship Newbattle and Earldom of Lothian (1606) surrendered, 1621 | | | | | | | | | | | | | | | | | | | | | | | | | | |
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Earl of Lothian (1st creation) regranted, 1624 | | Lord Kerr of Newbattle and Earl of Lothian (2nd creation), 1631 | | | | | | | | | | | | | | | | | | | |
Anne Kerr de jure 3rd Countess of Lothian (1606) d. 1677[temp 3] | | William Kerr Created 1631 1st Earl of Lothian (1631) c. 1605–1675 | | Charles Kerr 2nd Earl of Ancram 1624–1690 | | John Ker de jure 3rd Lord Jedburgh d. c. 1670 | | | | | | Robert Ker 4th Lord Jedburgh d. c. 1692 |
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| | | | Marquess of Lothian, Viscount of Briene, and Lord Ker of Newbattle, Oxnam, Jedburgh, Dolphinstoun and Nisbet, 1701 |
| | | | Robert Kerr 1st Marquess of Lothian, 4th Earl of Lothian (1606), 2nd Earl of Lothian (1631), 3rd Earl of Ancram 1636–1702/3 |
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| | | | William Kerr 2nd Marquess of Lothian, 5th Lord Jedburgh 1661–1721/22 |
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| | | | William Kerr 3rd Marquess of Lothian c. 1690–1767 |
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| | | | William Henry Kerr 4th Marquess of Lothian 1710–1775 |
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| | | | William John Kerr 5th Marquess of Lothian 1737–1815 |
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| | | | Baron Ker of Kersehugh in the County of Roxburgh, 1821 |
| | | | William Kerr 6th Marquess of Lothian 1763–1824 |
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| | | | John William Robert Kerr 7th Marquess of Lothian 1794–1841 |
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William Schomberg Kerr 8th Marquess of Lothian 1832–1870 | | Schomberg Henry Kerr 9th Marquess of Lothian 1833–1900 | | Ralph Drury Kerr 1837–1916 | | Walter Talbot Kerr 1839–1927 |
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Walter William Schomberg Kerr Styled Earl of Ancram 1867–1892 | | Robert Schomberg Kerr 10th Marquess of Lothian 1874–1930 | | Philip Henry Kerr 11th Marquess of Lothian 1862–1940 | | Ralph Francis Kerr 1874–1932 | | Andrew William Kerr 1877–1929 |
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| | | | | | | | Peter Francis Walter Kerr 12th Marquess of Lothian 1922–2004 |
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| | | | | | | | Michael Andrew Foster Jude Kerr 13th Marquess of Lothian 1945–2024 | | Ralph William Francis Joseph Kerr 14th Marquess of Lothian b. 1957 |
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| | | | John Walter Donald Peter Kerr b. 1988 Heir Apparent | | Frederick James Michael Ralph Kerr b. 1989 | | Francis Andrew William George Kerr b. 1991 | | Hugh Alexander Thomas Joseph Kerr b. 1999 |