Here are some of the key facts about King George III:
* He was born on June 4, 1738, in London. He was the eldest son of King George II and Queen Caroline.
* He succeeded to the throne at the age of 22 upon the death of his father in 1760.
* He was married to Charlotte of Mecklenburg-Strelitz in 1761. They had 15 children, including King George IV and King William IV.
* During his reign, the British Empire expanded significantly. Britain gained control of Canada, India, and Australia.
* The American Revolution (1775-1783) was a major event during his reign. The American colonies declared independence from Britain, and the United States was formed.
* The French Revolution (1789-1799) also had a significant impact on Britain. Britain fought against France in the Napoleonic Wars, which lasted for over 20 years.
* King George III was known for his mental illness. He suffered from porphyria, a rare disease that caused him to have episodes of madness.
* He died on January 29, 1820, at Windsor Castle. He was succeeded by his eldest son, King George IV.