George III of Great Britain (r. 1760-1820) was the third of the Hanoverian monarchs, and he remains the longest-reigning king in British history. His six decades on the throne saw the creation of the United Kingdom, the loss of the 13 American colonies, but massive expansion of the British Empire elsewhere, and great victories such as Trafalgar against the French.
More about: George III of Great BritainServer Costs Fundraiser 2026
It costs $20,000 a year to run our servers, and we need your help to pay for them!
$2426 / $20000
Definition
Timeline
-
4 Jun 1738George William Frederick, future George III of Great Britain, is born.
-
1756 - 1763The Seven Years' War.
-
1760 - 1820Reign of George III of Great Britain.
-
25 Oct 1760George II dies of a heart attack, he is succeeded by his grandson George III of Great Britain.
-
8 Sep 1761George III of Great Britain marries Princess Charlotte of Mecklenburg-Strelitz.
-
22 Sep 1761The coronation of George III of Great Britain is held in Westminster Abbey.
-
12 Aug 1762Future George IV of Great Britian is born in St. James’ Palace.
-
1768George III of Great Britain helps found the Royal Academy of the Arts.
-
Apr 1770Captain James Cook lands in Australia.
-
Dec 1773At the Boston Tea Party American colonists protest at the import duties on tea.
-
1775 - 1783The American Revolutionary War.
-
3 Sep 1783The British government formally recognises the independence of the 13 North American colonies in the Treaty of Versailles.
-
1785Prince George, future George IV, marries the actress Maria Fitzherbert without his father's permission.
-
1 Jan 1800The Act of Union creates the United Kingdom of Great Britain and Ireland.
-
1803 - 1815The Napoleonic Wars.
-
21 Oct 1805A Royal Navy fleet led by Nelson defeats the French at the Battle of Trafalgar.
-
6 Feb 1811Prince George becomes Prince Regent for his father George III of Great Britain after his mental illness worsens.
-
29 Jan 1820George III of Great Britain dies of pneumonia in Windsor Castle.
