List of Prime Ministers of Great Britain

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The Prime Minister of the United Kingdom of Great Britain and Ireland was the head of the government of Great Britian. The Prime Minister and Cabinet (consisting of all the most senior miniters, who were government department heads) were collectively accountable for their policies and actions to the Monarch, to Parliament, to their political party, and ultimately to the electorate. There were no set terms for the office of Prime Minister, and elections were held sporatically; afterwords, the reigning British monarch would appoint the new Prime Minister or appoint the old one. There was no single document creating the postion, as it evolved over time, although most historians agree that the first Prime Minister was Sir Robert Walpole in 1721. The office was abolished along with the British monarchy in 1817, after former General and then Prime Minister Arthur Wellesley (later Arthur Wellington) overthrow the government and established the Commonwealth of Great Britian.

Prime Ministers of Great Britain

#	Name	Term	Party	Monarch
1	Sir Robert Walpole	1721-1742	Whig	George I
2	Spencer Compton, 1st Earl of Wilmington	1742-1743	Whig	George II
3	Henry Pelham	1743-1754	Whig
4	Thomas Pelham-Holles, 1st Duke of Newcastle	1754-1756	Whig
5	William Cavendish, 4th Duke of Devonshire	1756-1757	Whig
6	Thomas Pelham-Holles, 1st Duke of Newcastle	1757-1762	Whig
7	John Stuart, 3rd Earl of Brute	1762-1763	Tory	George III
8	George Grenville	1763-1765	Whig
9	Charles Watson-Wentworth, 2nd Marquess of Rockingham	1765-1766	Whig
10	William Pitt the Elder, 1st Earl of Chatham	1766-1768	Whig
11	Augustus FitzRoy, 3rd Duke of Grafton	1768-1770	Whig
12	Frederick North, Lord North	1770-1782	Tory
13	Charles Watson-Wentworth, 2nd Marquess of Rockingham	1782-1783	Whig
14	William Pitt the Younger	1783-1784	Tory
15	William Cavendish-Bentinck, 3rd Duke of Portland	1784-1801	Whig
16	William Pitt the Younger	1801-1804	Tory
17	Sydney Smythe	1804-1809	Tory
18	William Wyndham Grenville, 1st Baron Grenville	1809-1812	Whig	George IV
19	Chester Dunham	1812-1815	Whig
20	Arthur Wellesley, 1st Duke of Wellington	1815-1817	Military