

Kings & Queens of Britain
There have been 12 monarchs of the Kingdom of Great Britain & the United Kingdom since the merger of the Kingdom of England & the Kingdom of Scotland on 1 May 1707.
England & Scotland had been in personal union under the House of Stuart since 24 March 1603 (James VI & I's reign).
On 1 January 1801, Great Britain merged with the Kingdom of Ireland (also previously in personal union with Great Britain) to form the United Kingdom of Great Britain & Ireland.
After most of Ireland left the union on 6 December 1922, its name was amended on 12 April 1927 to the United Kingdom of Great Britain & Northern Ireland.
Since 8 March 1702 Anne had been Queen of England, Scotland & Ireland, & so became Queen of Great Britain upon the Union of England & Scotland. I will cover the monarchs prior to 1707 elsewhere. This is just a short introduction into each monarch.
The House of Stuart (1707–1714); House of Hanover (1714–1901); Houses of Saxe-Coburg and Gotha (1901–1917) and Windsor (from 1917)

Anne,
Queen of Great Britain
Reigned as Queen of England:8 March 1702 – 1 May 1707
Reigned as Queen of Great Britain: 1 May 1707 - 1 August 1714
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Born - 6 February 1665
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Married - George of Denmark (1683)
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Died - 1 August 1714

King George I
R: 1 August 1714 - 11 June 1727
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B - 28 May 1660
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M - Sophia Dorothea of Celle (1682)
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D - 11 June 1727

King George II
R: 11 June 1727 - 25 October 1760
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B - 30 October 1683
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M - Caroline of Ansbach (1705)
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D - 25 October 1760

King George III
R: 25 October 1760 - 29 January 1820
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B - 4 June 1738
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M - Charlotte of Mecklenburg-Strelitz (1761)
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D - 29 January 1820