| | | | William ap Thomas d. 1445 |
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| Earl of Pembroke (8th creation) | | | | | | | | | |
William Herbert c. 1423–1469 1st Earl of Pembroke | | | | | | | | | |
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William Herbert 1451–1491 2nd Earl of Pembroke | | Richard Herbert d. 1510 | | Richard Herbert of Coldbrook d. 1469 |
Title surrendered to the Crown 1479 | | | | | | | | | | |
| | | | Earl of Pembroke (10th creation) and Baron Herbert of Cardiff, 1551 | | | | | |
| | | | William Herbert c. 1501–1570 1st Earl of Pembroke, etc. | | Richard Herbert |
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Henry Herbert c. 1539–1601 2nd Earl of Pembroke, etc. | | Edward Herbert 1544–1595 | | Edward Herbert c. 1513–1593 |
| For descendants, see Earl of Pembroke | | | | | | | | | | |
| | | | Baron Powis of Powis Castle, 1629 | | | | | | | | | | | | | | |
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| | | | William Herbert c. 1573–1655 1st Baron Powis of Powis Castle | | Richard Herbert Lord of Cherbury 1557–1596 | | | | | | Mathew Herbert |
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| | | | Baronet Powis, of Red Castle | | Baron Herbert of Castle Island, 1624 Baron Herbert of Chirbury (1st creation), 1629 | | | | | | | | | | | | | | | | | | |
| | | | Percy Herbert 1598–1667 2nd Baron Powis of Powis Castle, 1st Baronet Powis | | Edward Herbert 1583–1648 1st Baron Herbert of Cherbury and of Castle Island | | | | | | Francis Herbert | | | | | | Henry Herbert, Master of the Revels 1595–1673 |
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| | | | Earl of Powis (1st creation), 1674 Marquess of Powis and Viscount Montgomery, 1687 | | | | | | | | | | | | | | | | | | | | | | | | |
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| | | | William Herbert 1626–1696 1st Marquess of Powis, etc., 3rd Baron Powis of Powis Castle, 2nd Baronet Powis | | Richard Herbert c. 1604–1655 2nd Baron Herbert of Cherbury and of Castle Island | | Edward Herbert | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Baron Herbert of Chirbury (2nd creation), 1694 |
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| | | | William Herbert 1665–1745 2nd Marquess of Powis, etc., 4th Baron Powis of Powis Castle, 5th Baronet Powis | | Edward Herbert 1633–1678 3rd Baron Herbert of Cherbury and of Castle Island | | Florentia Herbert 1637–1694 | | Richard Herbert c. 1629–1676 | | Henry Herbert c. 1640–1691 4th Baron Herbert of Cherbury and of Castle Island | | Henry Herbert 1654–1709 1st Baron Herbert of Chirbury |
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| | | | | | | | | | | | | | | | | | | | | | | | Barony Herbert of Cherbury (1st creation) and of Castle Island extinct, 1691 | | | | | |
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| | | | William Herbert 1698–1748 3rd Marquess of Powis, 5th Baron Powis of Powis Castle, 6th Baronet Powis | | Edward Herbert d. 1734 | | Francis Herbert 1667–1719 | | | | | | | | | | Henry Herbert d. 1738 2nd Baron Herbert of Chirbury |
| | | | Marquessate of Powis and all subsidiary titles extinct, 1748 | | | | | | | | | | | | | | | | | | | | Barony Herbert of Cherbury (2nd creation) extinct, 1738 |
| | | | | | | | | | | | | Baron Herbert of Chirbury (3rd creation), 1743 Earl of Powis (2nd creation), 1748 Baron Herbert of Chirbury and Ludlow, 1749 | | | | | | Baron Clive of Plassey, 1762 |
| | | | | | | | Barbara Herbert 1735–1786 | | Henry Herbert 1703–1772 1st Earl of Powis, etc. | | | | | | Robert Clive "Clive of India" 1725–1774 1st Baron Clive of Plassey |
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| | | | | | | | | | | | | | | | | | | | | | Baron Clive of Walcot, 1794 Baron Herbert of Chirbury (5th creation), 1804 Earl of Powis (3rd creation), Viscount Ludlow and Baron Powis, 1804 |
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| | | | | | | | | | | | George Herbert 1755–1801 2nd Earl of Powis, etc. | | Henrietta Herbert 1758–1830 | | Edward Clive 1754–1839 1st Earl of Powis, etc., 2nd Baron Clive of Plassey |
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| | | | | | | | | | | | Earldom of Powis (2nd creation) and subsidiary titles extinct, 1801 | | | | | | | | | | |
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| | | | | | | | | | | | | | | | | | | | Edward Herbert 1785–1848 2nd Earl of Powis, etc., 3rd Baron Clive of Plassey |
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Edward Herbert 1818–1891 3rd Earl of Powis, etc., 4th Baron Clive of Plassey | | Percy Egerton Herbert 1822–1876 | | George Herbert 1825–1894 | | Robert Herbert 1827–1902 | | | | | | William Herbert 1834–1909 |
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Henry Herbert 1861–1865 | | George Herbert 1862–1952 4th Earl of Powis, etc., 5th Baron Clive of Plassey | | Edward Herbert 1855–1924 | | Graham Herbert 1856–1917 | | Arthur Herbert 1866–1907 | | Henry Herbert 1882–1911 | | Percy Herbert 1885–1968 |
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Percy Herbert Viscount Clive 1892–1916 | | Mervyn Herbert 1904–1943 styled Viscount Clive | | Edward Herbert 1889–1974 5th Earl of Powis, etc., 6th Baron Clive of Plassey | | Christian Herbert 1904–1988 6th Earl of Powis, etc., 7th Baron Clive of Plassey | | | | | | | | | | George Herbert 1925–1993 7th Earl of Powis, etc., 8th Baron Clive of Plassey |
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| | | | | | | | | | | | | | | | | | | | | | | | John Herbert b. 1952 8th Earl of Powis, etc., 9th Baron Clive of Plassey |
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| | | | | | | | | | | | | | | | | | | | | | | | Jonathan Herbert b. 1979 styled Viscount Clive |