William Beauclerk, 9th Duke of St Albans

William Aubrey de Vere Beauclerk, 9th Duke of St Albans (24 March 1801 – 27 May 1849) was an English aristocrat and cricketer.

He was the son of William Beauclerk, 8th Duke of St Albans, and his second wife, the former Maria Janetta Nelthorpe.

[1] His paternal grandparents were Lady Catharine Ponsonby and Aubrey Beauclerk, 5th Duke of St Albans, a Whig Member of Parliament for Thetford from 1761 to 1768 and for Aldborough from 1768 to 1774.

Harriet, the widow of banker Thomas Coutts and daughter of Lt. Matthew Mellon, was an actress who eventually starred at Drury Lane.

After his death, his widow remarried, as his second wife, Lucius Cary, 10th Viscount of Falkland (formerly the Governor of Nova Scotia and Bombay), on 10 November 1859.