The daughter of Charles Brunsden; after an earlier marriage to a Captain Thomas killed at Waterloo, she married the jurist John Singleton Copley in 1819.

CORRESPONDENCE OF Sarah Garay Thomas Copley, Lady Lyndhurst [née Brunsden]:

Lady Lyndhurst to Sydney Smith, 24 January 1828 in A Memoir of the Reverend Sydney Smith. By his Daughter, Lady Holland. With a Selection from his Letters, edited by Mrs. Austin 2 vols (London: Longman, Brown, Green, and Longmans, 1855)