Catherine Beauclerk, Duchess of St Albans

Catherine Beauclerk, Duchess of St Albans (née Lady Catherine Ponsonby; 14 October 1742 – 4 September 1789) was a British noblewoman.

She was the daughter of William Ponsonby, 2nd Earl of Bessborough, and Lady Caroline Cavendish, the eldest of his three children.

[1][2] She married Aubrey Beauclerk, 5th Duke of St Albans, on 4 May 1763 in London.

They had seven children:[3][4] 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.

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'.