Margaret Cavendish Bentinck, Duchess of Portland was the richest woman in Great Britain of her time, styled Lady Margaret Harley before 1734, Duchess of Portland from 1734 to her husband's death in 17
Margaret Cavendish Bentinck, Duchess of Portland by Christian Friedrich Zincke, 1738
Portrait c. 1744 by Thomas Hudson
William Bentinck, 2nd Duke of Portland, styled Viscount Woodstock from 1709 to 1716 and Marquess of Titchfield from 1716 to 1726, was a British peer and politician.
Margaret Bentinck, Duchess of Portland
…and her paternal grandfather, the 1st Earl of Oxford and Mortimer, to do so. At 19, on 11 July 1734, in Oxford Chapel, Marylebone, she married the 2nd Duke of Portland, her 'Sweet Will', and they later had six children (all born at Welbeck Abbey): Lady Elizabeth Bentinck (Welbeck Abbey, 27 June 1735 – 25 December 1825…
William Bentinck, 2nd Duke of Portland (Christian Friedrich Zincke)