Whig hostess, the daughter of Sir Peniston Lamb, first Viscount Melbourne; she married (1) in 1805 Sir Peter Leopold Louis Francis Nassau Cowper, fifth Earl Cowper, and (2) in 1839, her long-time lover, Henry John Temple, third Viscount Palmerston.

CORRESPONDENCE OF Emily Mary Cowper, countess Cowper [née Lamb]:

Emily Lamb to Frederick Lamb, [1803] in In Whig Society 1775-1818: Compiled from the hitherto unpublished Correspondence of Elizabeth, Viscountess Melbourne, and Emily Lamb, Countess Cowper, afterwards Viscountess Palmerston (London: Hodder and Stoughton LTD., 1921)

Lord Cowper to Emily Lamb, [May 1805] in In Whig Society 1775-1818: Compiled from the hitherto unpublished Correspondence of Elizabeth, Viscountess Melbourne, and Emily Lamb, Countess Cowper, afterwards Viscountess Palmerston (London: Hodder and Stoughton LTD., 1921)

Frederick Lamb to Lady Cowper, 6 January 1814 in In Whig Society 1775-1818: Compiled from the hitherto unpublished Correspondence of Elizabeth, Viscountess Melbourne, and Emily Lamb, Countess Cowper, afterwards Viscountess Palmerston (London: Hodder and Stoughton LTD., 1921)