| | | | | | | | | | | | | | | | |
| | | | | | | | | |
| | | | Lord Roxburghe, 1600 Earl of Roxburghe and Lord Ker of Cessford and Cavertoun, 1616 | | | | | | | | | |
| | | | Robert Ker 1570–1650 1st Earl of Roxburghe, etc. | | | | | | Margaret Ker |
| | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | Lord Bellenden, of Broughton, 1661 |
| | | | | | | | | | |
William Ker d. 1643 styled Lord Ker | | Lady Jean Ker | | Henry Ker d. 1643 styled Lord Ker | | William Bellenden d. 1671 1st Lord Bellenden |
| | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | |
| | | | William Drummond (Ker) 1622–1675 2nd Earl of Roxburghe, etc. | | Jean Ker | | | | | | Margaret Ker d. 1681 | | James Innes 3rd Innes Baronet |
| | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | |
| | | | Robert Ker 1658–1682 3rd Earl of Roxburghe, etc. | | John Ker (Bellenden) d. 1707 2nd Lord Bellenden | | | | | | | | | | Henry Innes d. 1721 4th Innes Baronet |
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | |
| | | | | Duke of Roxburghe, Marquess of Bowmont and Cessford, Earl of Kelso, Viscount Broxmouth, 1707 | | | | | | | | | | | | | | | | | | | |
Robert Ker c. 1677–1696 4th Earl of Roxburghe, etc. | | John Ker 1680–1741 1st Duke of Roxburghe, etc., 5th Earl of Roxburghe, etc. | | John Bellenden 1685–1741 3rd Lord Bellenden | | | | | | William Bellenden 1702–1758 | | Henry Innes d. 1762 5th Innes Baronet |
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | |
| | | | Earl Ker, of Wakefield in the County of York, and Baron Ker, of Wakefield in the County of York, 1722 | | | | | | | | | | | | | | | | | Duke of Roxburghe, 1707 (succession decided, 1812) |
| | | | Robert Ker c. 1709–1755 2nd Duke of Roxburghe, etc., 6th Earl of Roxburghe, etc., 1st Earl Ker, etc. | | Ker Bellenden 1725–1753 4th Lord Bellenden | | Robert Bellenden 1734–1797 6th Lord Bellenden | | William Bellenden-Ker 1728–1805 4th Duke of Roxburghe, etc., 8th Earl of Roxburghe, etc. 7th Lord Bellenden | | James Innes-Ker 1736–1823 5th Duke of Roxburghe, etc., 9th Earl of Roxburghe, etc. 6th Innes-Ker Baronet |
| | | | | | | | | | | | | | | | | | Lordship Bellenden extinct, 1805 | | | | | |
| | | | | | | | | | | | | | | | | | | | | | Earl Innes, 1837 |
| | | | John Ker 1740–1804 3rd Duke of Roxburghe, etc., 7th Earl of Roxburghe, etc., 2nd Earl Ker, etc. | | John Ker Bellenden 1751–1796 5th Lord Bellenden | | | | | | | | | | James Henry Robert Innes-Ker 1816–1879 6th Duke of Roxburghe, etc., 10th Earl of Roxburghe, etc., 1st Earl Innes 7th Innes-Ker Baronet |
| | | | Dukedom dormant, Earldom Ker and Barony Ker extinct, 1804 | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | James Henry Robert Innes-Ker 1839–1892 7th Duke of Roxburghe, etc., 11th Earl of Roxburghe, etc., 2nd Earl Innes 8th Innes-Ker Baronet |
| | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | Henry John Innes-Ker 1876–1932 8th Duke of Roxburghe, etc., 12th Earl of Roxburghe, etc., 3rd Earl Innes 9th Innes-Ker Baronet |
| | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | George Victor Robert John Innes-Ker 1913–1974 9th Duke of Roxburghe, etc., 13th Earl of Roxburghe, etc., 4th Earl Innes 10th Innes-Ker Baronet |
| | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | Guy David Innes-Ker 1954–2019 10th Duke of Roxburghe, etc., 14th Earl of Roxburghe, etc., 5th Earl Innes 11th Innes-Ker Baronet |
| | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | Charles Robert George Innes-Ker b. 1981 11th Duke of Roxburghe, etc., 15th Earl of Roxburghe, etc., 6th Earl Innes 12th Innes-Ker Baronet |
| | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | Frederick Charles Ian Innes-Ker b. 2024 styled Marquess of Bowmont and Cessford |
| | | | | | | | | | | | | | | | | | | | Heir apparent to the Dukedom of Roxburghe, etc. |