Lady Mary Cavendish-Bentinck

Cavendish-Bentinck Side

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

• Bentinck, William 2nd Duke of Portland 1709 - 1762  (53 years)
• Harley, Margaret Cavendish 1714 - 1785  (71 years)

Cavendish Side

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

• Cavendish, William 4th Duke of Devonshire 1720 - 1764  (44 years)
• Boyle, Charlotte Elizabeth Marchioness of Hartington, 6th Baroness Clifford 1731 - 1751  (20 years)

• Cavendish, William Duke of Devonshire 1698 - 1755  (57 years)
• Hoskins, Catherine 1698 - 1777  (~ 78 years)
• Boyle, Richard 3rd Earl of Burlington and 4th Earl of Cork 1694 - 1753  (59 years)
• Savile, Lady Dorothy Countess of Burlington and of Cork 1699 - 1758  (59 years)