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
William Cowper-Temple, 1st Baron Mount Temple William Cowper-Temple, 1st Baron Mount Temple William Francis Cowper-Temple, 1st Baron Mount Temple PC (13 December 1811 – 16 October 1888), known as William Cowper (pronounced "Cooper") before 1869 and as William Cowper-Temple between 1869 and 1880, was a British Liberal statesman. Born at Brocket Hall, Hertfordshire, Cowper was the second son of Peter Cowper, 5th Earl Cowper, and the Hon. Emily Lamb, daughter of Peniston Lamb, 1st Viscount Melbourne (since his mother had several lovers there is some doubt about his true paternity). He was the younger brother of George Cowper, 6th Earl Cowper and nephew of Prime Minister