The daughter of Thomas March Phillipps; in 1808 she married Edward Spencer Cowper, son of the third earl Cowper; in 1827 she married the reverend G. A. Hamilton.

REFERENCES TO Hon. Catherine Cowper [née March Phillipps]:

Mrs George Lamb to Lady Melbourne, [1816] in In Whig Society 1775-1818: Compiled from the hitherto unpublished Correspondence of Elizabeth, Viscountess Melbourne, and Emily Lamb, Countess Cowper, afterwards Viscountess Palmerston (London: Hodder and Stoughton LTD.,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)