Catherine Beauclerk, Duchess of St Albans (née Lady Catherine Ponsonby; 14 October 1742 – 4 September 1789) was a British noblewoman. She was Duchess of St Albans through her marriage.
Lady Georgiana Beauclerk (1776 – 17 October 1791); died unmarried at age 15.[3]
On 21 October 1781 Catherine received the title of Mrs. Vere de Hanworth, and from the rise of her husband, became Duchess of St Albans on 10 February 1787. The couple lived in Rome for about three years. Their journey there may have been to avoid rumours in the press of a relationship between Catherine Beauclerk and Thomas Brand though on 4 June 1778, Lady Mary Lowther noted that 'Mr Beauclerk, Lady Catherine and Mr Brand were gone together abroad, being so in debt they found it troublesome staying at home'. The artist Franciszek Smuglewicz painted them in Rome twice.[5]
Aubrey Beauclerk died on 9 February 1802 at age 61.[4]