CH426391 Portrait of Margaret Cavendish Bentinck, 2nd Duchess of Portland (oil on canvas) by Dahl, Michael (1656-1743); 76.8x64.1 cm; Private Collection; (add.info.: Margaret Cavendish Bentinck (1714-85) half length in a green dress and mantle; one of the most eligible heiresses of her generation; dowry included Welbeck Abbey and London property;); Photo 穢 Christie\'s Images; Swedish, out of copyright.