What years did ponsonby baronet serve a conservative politician before they became a prime minister
Anthony Eden Robert Anthony Eden, 1st Earl of Avon, (12 June 1897 – 14 January 1977) was a British Conservative politician who served three periods as Foreign Secretary and then a relatively brief term as Prime Minister of the United Kingdom from 1955 to 1957.
Henry John Temple, 3rd Viscount Palmerston Henry John Temple, 3rd Viscount Palmerston, (20 October 1784 – 18 October 1865), was a British statesman who served twice as Prime Minister in the mid-19th century. For most of 1830 to 1865 he dominated British foreign policy when Britain was at the height of its power. Popularly nicknamed "Pam" and "The Mongoose", he was in government office almost continuously from 1807 until his death in 1865, beginning his parliamentary career as a Tory, switching to the Whigs in 1830, and concluding it as the first Prime Minister of the newly formed Liberal Party from 1859.