Frances Jocelyn, Viscountess Jocelyn Cowper was born in 1820, the youngest daughter of Emily Lamb, Countess Cowper, a daughter of Peniston Lamb, 1st Viscount Melbourne. Her paternity was officially attributed to Lady Cowper's husband, the 5th Earl Cowper. However, the historian K.D. Reynolds and others have argued that Henry John Temple, 3rd Viscount Palmerston was actually the father of Lady Frances and her brother William. Once widowed, her mother married Palmerston, though Lady Frances did not care for him. He became Prime Minister in 1859. In 1838, Lady Frances served as a maid of honour at the Coronation of Queen Victoria, and she also
Frederick Lamb, 3rd Viscount Melbourne that the marriage coincided with the early stages of the Oriental Crisis of 1840, and that the two men, although they were then personally barely on speaking terms, co-operated in an entirely professional way to resolve it. Palmerston, in addition to his real respect for Lamb, was anxious not to quarrel with him for Emily's sake: as Charles Greville remarked: "the Chief (Palmerston) is devoted to the sister and the sister to the brother". Relations between the two men became friendlier in later years, partly because both Palmerston and Emily were fond of Fred's wife Alexandrina. Lord Melbourne died childless