Archibald Primrose, 5th Earl of Rosebery, English politician, Prime Minister of the United Kingdom (born 1847)

Archibald Philip Primrose, 5th Earl of Rosebery, 1st Earl of Midlothian was a British Liberal Party politician who served as Prime Minister of the United Kingdom from March 1894 to June 1895. Between the death of his father in 1851, and the death of his grandfather, the 4th Earl of Rosebery, in 1868, he was known by the courtesy title of Lord Dalmeny.

The prime minister of the United Kingdom is the head of government of the United Kingdom. The prime minister advises the sovereign on the exercise of much of the royal prerogative, chairs the Cabinet, and selects its ministers. Modern prime ministers hold office by virtue of their ability to command the confidence of the House of Commons, so they are invariably members of Parliament.