|  |  |  |  |  |  |  |  |  |  |  | William Cavendish (c. 1505–1557) |  | Bess of Hardwick (c. 1527–1608) | 
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Baron Boyle of Youghal, 1616 Earl of Cork and Viscount Dungarvan, 1620 |  | Earl of Devonshire (1st creation), 1603 |  |  |  |  |  | Baron Cavendish, of Hardwicke in the County of Derby, 1605 Earl of Devonshire (2nd creation), 1618 |  |  |  |  |  | 
Richard Boyle (1566–1643) 1st Earl of Cork Viscount Dungarvan, Baron Boyle |  | Charles Blount (1563–1606) Earl of Devonshire, 8th Baron Mountjoy |  |  |  |  |  | William Cavendish (1552–1626) 1st Earl of Devonshire, 1st Baron Cavendish of Hardwick |  | Charles Cavendish (1553–1617) | 
 |  |  |  |  | Earldom of Devonshire (1st creation) extinct, 1606 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
 |  |  |  |  |  |  |  |  |  |  |  |  | William Cavendish (1591–1628) 2nd Earl of Devonshire and Baron Cavendish of Hardwick |  | Dukes of Newcastle (1st creation) | 
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Baron Clifford of Londesborough, 1644 Earl of Burlington (1st creation), 1664 |  |  |  |  |  | Earl of Orrery, 1660 |  |  |  |  |  | 
Richard Boyle (1612–1698) 2nd Earl of Cork and Viscount Dungarvan, 1st Earl of Burlington and Baron Clifford |  | Elizabeth Clifford 2nd Baroness Clifford suo jure |  | Roger Boyle (1621–1679) 1st Earl of Orrery |  | William Cavendish (1617–1684) 3rd Earl of Devonshire, 3rd Baron Cavendish of Hardwick | 
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Charles Boyle (1639–1694) styled Viscount Dungarvan, 3rd Baron Clifford |  | Roger Boyle (1646–1682) 2nd Earl of Orrery |  |  |  |  |  | William Cavendish (1640–1707) 1st Duke of Devonshire and Marquess of Hartington, 4th Earl of Devonshire and Baron Cavendish of Hardwick | 
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Charles Boyle (d. 1704) 3rd Earl of Cork and Viscount Dungarvan, 2nd Earl of Burlington, 4th Baron Clifford |  | Lionel Boyle (1671–1703) 3rd Earl of Orrery |  | Charles Boyle (1674–1731) 4th Earl of Orrery |  | William Cavendish (1672–1729) 2nd Duke of Devonshire and Marquess of Hartington, 5th Earl of Devonshire | 
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 |  |  |  | John Boyle (1707–1762) 5th Earl of Cork, Earl of Orrery, and Viscount Dungarvan |  | Richard Boyle (1694–1753) 4th Earl of Cork, 3rd Earl of Burlington, 5th Baron Clifford |  | William Cavendish (1698–1755) 3rd Duke of Devonshire and Marquess of Hartington, 6th Earl of Devonshire | 
 |  |  |  |  |  |  |  |  | Earldom of Burlington (1st creation) extinct, 1753 |  |  |  |  |  | 
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Hamilton Boyle (1729–1764) 6th Earl of Cork, Earl of Orrery, and Viscount Dungarvan |  | Edmund Boyle (1707–1762) 7th Earl of Cork, Earl of Orrery, and Viscount Dungarvan |  | Charlotte Elizabeth Boyle (1731–1754) 6th Baroness Clifford |  | William Cavendish (1720–1764) 4th Duke of Devonshire and Marquess of Hartington, 7th Earl of Devonshire | 
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 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Earl of Burlington (2nd creation) and Baron Cavendish of Keighley, in the county of York, 1831 | 
 |  |  |  | Edmund Boyle (1767–1856) 8th Earl of Cork, Earl of Orrery, and Viscount Dungarvan |  |  |  |  |  | William Cavendish (1748–1811) 5th Duke of Devonshire and Marquess of Hartington, 8th Earl of Devonshire, 7th Baron Clifford |  | George Augustus Henry Cavendish (1754–1834) 1st Earl of Burlington and Baron Cavendish of Keighley | 
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Charles Boyle (1800–1834) styled Viscount Dungarvan |  | John Boyle (1803–1874) |  | Georgiana Dorothy Cavendish (1783–1858) |  | William George Spencer Cavendish 🍌 (1790–1858) 6th Duke of Devonshire and Marquess of Hartington, 9th Earl of Devonshire, 8th Baron Clifford |  | William Cavendish (1783–1812) | 
 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Barony Clifford abeyant, 1812 |  |  |  |  |  | 
 |  |  |  |  |  |  |  |  |  | Blanche Howard (1812–1840) |  |  |  |  |  | William Cavendish (1808–1891) 7th Duke of Devonshire and Marquess of Hartington, 10th Earl of Devonshire, 2nd Earl of Burlington and Baron Cavendish of Keighley | 
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Richard Edmund St Lawrence Boyle (1829–1904) 9th Earl of Cork, Earl of Orrery, and Viscount Dungarvan |  |  |  |  |  | Gerald Edmund Boyle |  | Spencer Compton Cavendish (1833–1908) 8th Duke of Devonshire and Marquess of Hartington, 11th Earl of Devonshire, 3rd Earl of Burlington and Baron Cavendish of Keighley |  | Edward Cavendish (1838–1891) | 
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Charles Spencer Canning Boyle (1861–1925) 10th Earl of Cork, Earl of Orrery, and Viscount Dungarvan |  | Robert John Lascelles Boyle (1864–1934) 11th Earl of Cork, Earl of Orrery, and Viscount Dungarvan |  | William Henry Dudley "Ginger" Boyle (1873–1967) 12th Earl of Cork, Earl of Orrery, and Viscount Dungarvan |  |  |  |  |  | Victor Christian William Cavendish (1868–1938) 9th Duke of Devonshire and Marquess of Hartington, 12th Earl of Devonshire, 4th Earl of Burlington and Baron Cavendish of Keighley | 
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 |  |  |  |  |  |  |  |  | Edward William Spencer Cavendish (1895–1950) 10th Duke of Devonshire and Marquess of Hartington, 13th Earl of Devonshire, 5th Earl of Burlington and Baron Cavendish of Keighley |  | Dorothy Evelyn Cavendish (1900–1966) |  | Harold Macmillan (1894–1986) | 
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Patrick Reginald Boyle (1910–1995) 13th Earl of Cork, Earl of Orrery, and Viscount Dungarvan |  | John William Boyle (1916–2003) 14th Earl of Cork, Earl of Orrery, and Viscount Dungarvan |  | William John Robert Cavendish (1917–1944) styled Marquess of Hartington |  | Kathleen Kennedy (1920–1948) |  | Andrew Robert Buxton Cavendish (1920–2004) 11th Duke of Devonshire and Marquess of Hartington, 14th Earl of Devonshire, 6th Earl of Burlington and Baron Cavendish of Keighley | 
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 |  |  |  | John Richard Boyle (b. 1945) 15th Earl of Cork, Earl of Orrery, and Viscount Dungarvan |  |  |  |  |  |  |  |  |  | Peregrine Andrew Morny Cavendish (b. 1944) 12th Duke of Devonshire and Marquess of Hartington, 15th Earl of Devonshire, 7th Earl of Burlington and Baron Cavendish of Keighley | 
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 |  |  |  | Rory Jonathan Courtenay Boyle (b. 1978) styled Viscount Dungarvan |  |  |  |  |  |  |  |  |  | William Cavendish (b. 1969) styled Earl of Burlington | 
 |  |  |  | Heir apparent to the Earldoms of Cork and Orrery |  |  |  |  |  |  |  |  |  | Heir apparent to the Dukedom of Devonshire |