Cavendish Bentinck, Gen Lord Frederick MP

Cavendish Bentinck Side

• Cavendish Bentinck, William Henry Cavendish 3rd Duke of Portland KG PC FRS 1738 - 1809  (71 years)

• Bentinck, William 2nd Duke of Portland KG 1708 - 1762  (54 years)
• Harley, Lady Margaret Duchess of Portland 1714 - 1785  (71 years)

• Bentinck, William Henry 1st Duke of Portland 1682 - 1726  (44 years)
• Noel, Lady Elizabeth Duchess of Portland 1688 - 1737  (49 years)

Cavendish Side

• Cavendish, Lady Dorothy Duchess of Portland 1750 - 1794  (43 years)

• Cavendish, William 4th Duke of Devonshire KG PC 1720 - 1764  (44 years)
• Boyle, Lady Charlotte Elizabeth 6th Baroness Clifford (suo jure) Marchioness of Hartington 1731 - 1754  (23 years)

• Cavendish, William 3rd Duke of Devonshire KG PC 1698 - 1755  (57 years)
• Hoskins, Catherine Duchess of Devonshire Abt 1700 - 1777  (77 years)
• Boyle, Richard 3rd Earl of Burlington 4th Earl of Cork KG PC 1694 - 1753  (59 years)
• Savile, Lady Dorothy Countess of Burlington Countess of Cork 1699 - 1758  (59 years)