Bentinck, Margaret Cavendish., 1715-1785 Duchess of Portland née Cavendish-Harley; dau. of 2nd Earl of Oxford; m 2nd Duke of Portland 1734

1. Bentinck, Margaret Cavendish., 1715-1785 Duchess of Portland née Cavendish-Harley; dau. of 2nd Earl of Oxford; m 2nd Duke of Portland 1734
2. Radial Graph