George III

King of Great Britain and Ireland from 1760 to 1820

George III was the King of Great Britain and Ireland from 1760 until his death in 1820. He was the first British monarch to be born in Great Britain and speak English as his first language. Despite some mental health issues later in his life, George III had a long and eventful reign, marked by military conflicts, the loss of the American colonies, and the banning of the transatlantic slave trade.

Table of Contents

Family Info

Siblings

Princess Augusta of Great Britain

Prince Edward, Duke of York and Albany

Princess Elizabeth of Great Britain

Prince William Henry, Duke of Gloucester and Edinburgh

Prince Henry, Duke of Cumberland and Strathearn

Princess Louisa of Great Britain

Prince Frederick of Great Britain

Caroline Matilda of Great Britain

Spouses

Charlotte of Mecklenburg-Strelitz

Hannah Lightfoot

Children

George IV of the United Kingdom

Prince Frederick, Duke of York and Albany

William IV

Charlotte, Princess Royal

Prince Edward, Duke of Kent and Strathearn

Princess Augusta Sophia of the United Kingdom

Princess Elizabeth of the United Kingdom

Ernst August II of Hanover

Prince Augustus Frederick, Duke of Sussex

Prince Adolphus, Duke of Cambridge

Princess Mary of the United Kingdom

Princess Sophia of the United Kingdom

Prince Octavius of Great Britain

Prince Alfred of Great Britain

Princess Amelia of the United Kingdom

About the George III

George IIIwas King of Great Britain and Ireland from 25 October 1760 until his death in 1820. The Acts of Union 1800 unified Great Britain and Ireland into the United Kingdom of Great Britain and Ireland, with George as its king. He was concurrently Duke and Prince-elector of Hanover in the Holy Roman Empire before becoming King of Hanover on 12 October 1814. He was a monarch of the House of Hanover, who, unlike his two predecessors, was born in Great Britain, spoke English as his first language, and never visited Hanover.

George was born during the reign of his paternal grandfather, King George II, as the first son of Frederick, Prince of Wales, and Princess Augusta of Saxe-Gotha. Following his father’s death in 1751, Prince George became heir apparent and Prince of Wales. He succeeded to the throne on George II’s death in 1760. The following year, he married Princess Charlotte of Mecklenburg-Strelitz, with whom he had 15 children. George III’s life and reign were marked by a series of military conflicts involving his kingdoms, much of the rest of Europe, and places farther afield in Africa, the Americas and Asia. Early in his reign, Great Britain defeated France in the Seven Years’ War, becoming the dominant European power in North America and India. However, Britain lost 13 of its North American colonies in the American War of Independence. Further wars against revolutionary and Napoleonic France from 1793 concluded in the defeat of Napoleon at the Battle of Waterloo in 1815. In 1807, the transatlantic slave trade was banned from the British Empire.

In the later part of his life, George had recurrent and eventually permanent mental illness. The exact nature of the mental illness is not known definitively, but historians and medical experts have suggested that his symptoms and behaviour traits were consistent with either bipolar disorder or porphyria. In 1810, George suffered a final relapse, and his eldest son, the Prince of Wales, was named Prince Regent the following year. The King died aged 81, at which time the Regent succeeded him as George IV. George III reigned during much of the Georgian and Regency eras. At the time of his death, he was the longest-lived and longest-reigning British monarch, having reigned for 59 years and 96 days; he remains the longest-lived and longest-reigning male monarch in British history.

Frequently Asked Questions

George III became King of Great Britain and Ireland on 25 October 1760 and reigned until his death in 1820.

The Acts of Union 1800 unified Great Britain and Ireland into the United Kingdom of Great Britain and Ireland, with George III as its king.

Yes, unlike his two predecessors, George III was born in Great Britain, spoke English as his first language, and never visited Hanover.

George III reigned for 59 years and 96 days, making him the longest-lived and longest-reigning British monarch at the time of his death.

George III’s reign was marked by military conflicts, the loss of the American colonies, and the banning of the transatlantic slave trade in 1807.

The exact nature of George III’s mental illness is not definitively known, but historians and medical experts have suggested it was likely either bipolar disorder or porphyria.

After George III’s final mental health relapse in 1810, his eldest son, the Prince of Wales, was named Prince Regent and succeeded him as George IV upon the king’s death in 1820.