The sister of John George Lambton, Lord Durham; in 1811 she married Frederick Howard, son of the earl of Carlisle, and in 1819 Henry Frederick Compton Cavendish, son of the earl of Burlington.

REFERENCES TO Frances Susan Cavendish [née Lambton]:

Thomas Creevey to Elizabeth Ord, 20 October 1824 in The Creevey Papers: A Selection from the Correspondence & Diaries of the late Thomas Creevey, M.P. (London: John Murray, 1903)