George III of the United Kingdom

George III (George William Frederick; 4 June 1738 - 29 January 1820) was King of Great Britain and of Ireland from 25 October 1760 until the union of the two kingdoms on 1 January 1801, after which he was King of the United Kingdom of Great Britain and Ireland until his death in 1820. He was the longest-lived and longest-reigning king in British history. He was concurrently Duke and Prince-elector of Brunswick-Lüneburg ("Hanover") in the Holy Roman Empire before becoming King of Hanover on 12 October 1814. He was a monarch of the House of Hanover but, unlike his two predecessors, he was born in Great Britain, spoke English as his first language and never visited Hanover.

Marriage
8 September 1761, in the Chapel Royal, St James's Palace the King married Princess Charlotte of Mecklenburg-Strelitz.

Issue
George IV of the United Kingdom (12 August 1762 – 26 June 1830) married Princess Caroline of Brunswick-Wolfenbüttel and had issue.
 * 1) Prince Frederick, Duke of York and Albany (16 August 1763 – 5 January 1827) married Princess Friederike Charlotte of Prussia but had no issue.
 * 2) William IV of the United Kingdom (21 August 1765 – 20 June 1837) married Princess Adelheid of Saxe-Meiningen and had issue.
 * 3) Charlotte, Princess Royal (29 September 1766 – 5 October 1828) married Frederick I of Württemberg and had issue.
 * 4) Prince Edward, Duke of Kent and Strathearn (2 November 1767 – 23 January 1820) married Princess Victoria of Saxe-Coburg-Saalfeld and had issue.
 * 5) Princess Augusta Sophia of the United Kingdom (8 November 1768 – 22 September 1840) never married.
 * 6) Princess Elizabeth of the United Kingdom (22 May 1770 – 10 January 1840) married Frederick VI, Landgrave of Hesse-Homburg but had no issue.
 * 7) Prince Ernest Augustus, Duke of Cumberland and Teviotdale (5 June 1771 – 18 November 1851) married Princess Friederike of Mecklenburg-Strelitz and had issue.
 * 8) Prince Adolphus, Duke of Cambridge (24 February 1774 – 8 July 1850) married Princess Auguste of Hesse-Kassel and had issue.
 * 9) Princess Mary of the United Kingdom (25 April 1776 – 30 April 1857) married Prince William Frederick, Duke of Gloucester and Edinburgh but had no issue.
 * 10) Princess Sophia of the United Kingdom (3 November 1777 – 27 May 1848) never married.
 * 11) Prince Octavius of Great Britain (23 February 1779 – 3 May 1783) died in infancy.
 * 12) Prince Alfred of Great Britain (22 September 1780 – 20 August 1782) died in infancy.
 * 13) Princess Amelia of the United Kingdom (7 August 1783 – 2 November 1810) never married.

Titles and styles

 * 4 June 1738 – 31 March 1751 His Royal Highness Prince George.
 * 31 March 1751 – 20 April 1751'His Royal Highness'' The Duke of Edinburgh.
 * 20 April 1751 – 25 October 1760 His Royal Highness The Prince of Wales.
 * 25 October 1760 – 29 January 1820 His Majesty The King.