| | | | John de Forbes |
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| | | | Lord Forbes, c. 1444 | | | | |
| | | | Alexander Forbes (c. 1380–1448) 1st Lord Forbes c. 1444–1448 |
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| | | | James Forbes (d. 1462) 2nd Lord Forbes 1448–c. 1461 |
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| | | | William Forbes (d. 1483) 3rd Lord Forbes c. 1461–by 1488 | | | | | | | | | | | | | | Duncan Forbes | | | | | | | | | | | | | | Patrick Forbes |
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Alexander Forbes (d. c. 1491) 4th Lord Forbes by 1488–c. 1491 | | Arthur Forbes (d. c. 1496) 5th Lord Forbes c. 1491–c. 1496 | | John Forbes (d. 1547) 6th Lord Forbes c. 1496–1547 | | | | | | | | | | Forbes, later Stuart-Forbes, of Monymusk | | | | | | | | | | | | | | Forbes, of Castle Forbes |
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| | | | | | | | William Forbes (1513–1593) 7th Lord Forbes 1547–1593 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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| | | | | | | | John Forbes (1542–1606) First called "Master of Forbes", then 8th Lord Forbes 1593–1606 | | | | | | | | | | | | | | | | | | | | | | | | | | William Forbes of Corse Castle (d. 1627) |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Forbes baronets, of Castle Forbes, 1628 |
William Forbes (1563–1592) | | John Forbes (1570–1606) "(9th) Lord Forbes" 1606–1606 His brief lordship was disputed and retroactively discounted.[a][7] | | Arthur Forbes (1581–1641) 9th Lord Forbes 1606–after 1634 | | John Forbes 8th of Pitsligo (d. 1625) | | | | | | | | | | | | | | | | | | William of Craigievar | | | | | | Arthur Forbes d. 1632 1st Baronet of Castle Forbes |
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| | | | | | | | | | | | | | | | | | | | | | Lord Forbes of Pitsligo, 1633 | | | | | | | | | | Forbes baronets, of Craigievar Castle, in the County of Aberdeen, 1630 | | | | | | Viscount Granard and Baron Clanehugh, 1675 Earl of Granard, 1684 |
| | | | | | | | Alexander Forbes (1600–1672) 10th Lord Forbes after 1634–1672 | | Anne | | | | | | Alexander Forbes (d. 1636) 1st Lord Forbes of Pitsligo 1633–1636 | | | | | | | | | | William Forbes, 1st Baronet d. 1648 1st Baronet of Craigievar and Fintray 1630–1648 | | | | | | Arthur Forbes 1623–1695 1st Earl of Granard, 1st Viscount Granard, 1st Baron Clanehugh, 2nd Baronet of Castle Forbes |
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| | | | William Forbes (d. 1697) 11th Lord Forbes after 1672–1697 | | | | | | John Forbes of Moneymusk (d. c. 1713) 3rd Baronet of Monymusk | | | | | | Alexander Forbes (d. 1690) 2nd Lord Forbes of Pitsligo 1636–1690 | | | | | | Alexander Forbes of Foveran (d. 1697) | | John Forbes, 2nd Baronet ("Red Sir John") (1636–1703) 2nd Baronet of Craigievar and Fintray 1648–1703 | | | | | | Arthur Forbes (c. 1656–1734) 2nd Earl of Granard, 2nd Viscount Granard, 2nd Baron Clanehugh, 3rd Baronet of Castle Forbes |
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William Forbes (1656–1716) 12th Lord Forbes 1697–1716 | | | | | | | | | | | William Forbes of Monymusk 4th Baronet of Monymusk | | John Forbes (b. 1680) | | Alexander Forbes (c. 1655–1690) 3rd Lord Forbes of Pitsligo 1690–1690 | | Sir Samuel Forbes, 1st Baronet (1653–1717) 1st Baronet of Foveran | | John Forbes, of Knaperna | | William Forbes, 3rd Baronet (1660–c. 1730) 3rd Baronet of Craigievar and Fintray 1703–c. 1730 | | | | | | George Forbes (1685–1765) 3rd Earl of Granard, 3rd Viscount Granard, 3rd Baron Clanehugh, 4th Baronet of Castle Forbes |
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William Forbes (d. 1730) 13th Lord Forbes 1716–1730 | | James Forbes (1689–1761) 15th Lord Forbes 1734–1761 | | Mary Forbes | | John Forbes (d. 1715) | | | Alexander Forbes (1678–1762) 4th Lord Forbes of Pitsligo 1691–1748 | | William Forbes | | Sir Alexander Forbes, 2nd Baronet (d. before 1755) 2nd Baronet of Foveran | | Samuel Forbes, of Knaperna | | Sir Arthur Forbes, 4th Baronet (1709–1773) 4th Baronet of Craigievar and Fintray c. 1730–1773 | | | | | | George Forbes 1710–1769 4th Earl of Granard, 4th Viscount Granard, 4th Baron Clanehugh, 5th Baronet of Castle Forbes |
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| | | | | | | | | | | | | | | | | | | | | | | Lordship Forbes of Pitsligo attainted, 1748 | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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Francis Forbes (1721–1734) 14th Lord Forbes 1730–1734 | | James Forbes (c. 1725–1804) 16th Lord Forbes 1761–1804 | | William Forbes (d. 1743) 5th Baronet of Edinburgh 1720–1743 | | Christian Forbes (1705–1789) | | | | | | Forbes Baronets of Newe in the County of Aberdeen Sir Charles Forbes, 1st Baronet (1774–1849) 1st Baronet of Newe 1823–1849 | | | | | | Sir John Forbes, 3rd Baronet (d. c. 1760) 3rd Baronet of Knaperna | | | | | | | | | | | George Forbes (1740–1780) 5th Earl of Granard, 5th Viscount Granard, 5th Baron Clanehugh, 6th Baronet of Castle Forbes |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Baronetcy of Foveran/Knaperna dormant, c. 1760 | | | | | | | | | | | | | | |
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| | | | James Ochoncar Forbes (1765–1843) 17th Lord Forbes 1804–1843 | | | | | | William Forbes (1739–1806) 6th Baronet of Edinburgh, and later Pitsligo 1743–1806 | | | | | | | | | | | | | | | | | | William Forbes (1755–1816) 5th Baronet of Craigievar and Fintray 1773–1816 | | | | | | George Forbes (1760–1837) 6th Earl of Granard, 6th Viscount Granard, 6th Baron Clanehugh, 1st Baron Granard, 7th Baronet of Castle Forbes |
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| | | | Walter Gammell Forbes (1798–1868) 18th Lord Forbes 1843–1868 | | Charlotte Elizabeth | | | William Forbes (1773–1828) 7th Baronet of Pitsligo 1806–1828 [m. Williamina, daughter of Sir John Stuart/Belshes/Belshes-Wishart (3rd Baronet (S. 1707) of Fettercairn co. Kincardine] | | | | | | | | | | | | | | Arthur Forbes, 6th Baronet (1784–1823) 6th Baronet of Craigievar and Fintray 1816–1823 | | | | | | | | John Forbes, 7th Baronet (1785–1846) 7th Baronet of Craigevar and Fintray 1823–1846 | | George Forbes (1785–1836) styled Viscount Forbes |
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| | | | | | | | | | | | | John Stuart Hepburn Forbes (1804–1866) 8th Baronet of Fettercairn and Pitsligo and later of Invermay and Balmanno 1828–1866 [Inherited Invermay and Balmanno as heir and cousin of Alexander Hepburn-Murray-Belshes (d. 1864)] | | Charles Hay Forbes (d. 1859) | | | | | | | | | | William Forbes-Sempill (1836–1905) 17th Lord Sempill 1884–1905 and 8th Baronet of Craigievar and Fintray 1846–1905 (married Carlone Louisa, daughter of Charles Forbes, 3rd Baronet of Newe) | | | | | | James Ochoncar Forbes (1837–1900) | | George Arthur Hastings Forbes (1833–1889) 7th Earl of Granard, 7th Viscount Granard, 7th Baron Clanehugh, 2nd Baron Granard, 8th Baronet of Castle Forbes |
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Horace Courtenay Gammell Forbes (1829–1914) 19th Lord Forbes 1868–1914 | | Atholl Monson Forbes (1841–1916) 20th Lord Forbes 1914–1916 | | | | | | | | | | William Forbes (1835–1906) 9th Baronet of Fettercairn, Pitsligo, Invermay, and Balmanno 1866–1906 | | | | | | John Forbes-Sempill (1863–1934) 18th Lord Sempill and 9th Baronet of Craigievar and Fintray 1905–1934 | | Arthur Lionel Ochoncar Forbes-Sempill (1877–1962) | | | | | | James Ochoncar Forbes (1867–1945) | | Bernard Arthur William Patrick Hastings Forbes (1874–1948) 8th Earl of Granard, 8th Viscount Granard, 8th Baron Clanehugh, 3rd Baron Granard, 9th Baronet of Castle Forbes |
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| | | | Atholl Laurence Cunyngham (1882–1953) 21st Lord Forbes 1916–1953 | | | | | | | | | | | | | | William Francis Forbes-Sempill (1893–1965) 19th Lord Sempill and 10th Baronet of Craigievar and Fintray 1934–1965 | | | | | | | | | | | | | | | | | | | | | | | | |
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| | | | Nigel Ivan Forbes (1918–2013) 22nd Lord Forbes 1953–2013 | | | | | | | | | | | | | | Ann Forbes-Sempill (1920–1995) 20th Lady Sempill | | Ewan Forbes (1912–1991) 11th Baronet of Craigievar and Fintray 1965–1991 | | | | | | | Patrick Walter Forbes (1914–1979) | | Arthur Patrick Hastings Forbes (1915–1992) 9th Earl of Granard, 9th Viscount Granard, 9th Baron Clanehugh, 4th Baron Granard, 10th Baronet of Castle Forbes | | John Forbes (1920–1982) |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | John Alexander Cumnock Forbes (1927–2000) 12th Baronet of Craigievar and Fintray 1991–2000 | | | | | | | | | | | | | | |
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| | | | Malcolm Nigel Forbes (b. 1946) 23rd Lord Forbes 2013–present | | | | | | | | | | | | | | James Sempill (b. 1949) 21st Lord Sempill | | | | | | | | | | Andrew Iain Ochoncar Forbes (1945–2003)[8] 13th Baronet of Craigievar and Fintray 2000–2003 | | | | | | Peter Arthur Edward Hastings Forbes (b. 1957) 10th Earl of Granard, 10th Viscount Granard, 10th Baron Clanehugh, 5th Baron Granard, 11th Baronet of Castle Forbes |
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| | | | | | | | | | | | | | | | | | | | Francis Henry William Sempill (b. 1979) styled Master of Sempill | | | | | | | | | | James Patrick Ochoncar Forbes (b. 1986) 14th Baronet of Craigievar and Fintray 2003–present | | David Ian Ochoncar Forbes (b. 1993) Heir presumptive to the Baronetage of Craigievar and Fintray | | Jonathan Peter Hastings Forbes b. 1981 styled Viscount Forbes |