Here follows a list of children and legitimate grandchildren and great-grandchildren of George III, King of the United Kingdom and his wife, Charlotte of Mecklenburg-Strelitz. Their fifteen children include George IV of the United Kingdom, William IV of the United Kingdom, and Ernest Augustus, King of Hanover. Their grandchildren include Queen Victoria of the United Kingdom and King George V of Hanover. Their great-grandchildren include King Edward VII of the United Kingdom and Ernest Augustus, Crown Prince of Hanover.
| Name | Birth | Death | Notes[1] |
|---|---|---|---|
| George IV | 12 August 1762 | 26 June 1830 | married 1795, Caroline of Brunswick; had issue |
| Frederick, Duke of York | 16 August 1763 | 5 January 1827 | married 1791, Princess Frederica Charlotte of Prussia; no issue |
| William IV | 21 August 1765 | 20 June 1837 | married 1818, Princess Adelaide of Saxe-Meiningen; no surviving legitimate issue |
| Charlotte, Princess Royal | 29 September 1766 | 6 October 1828 | married 1797, Frederick I of Württemberg; no surviving issue |
| Edward, Duke of Kent | 2 November 1767 | 23 January 1820 | married 1818, Princess Victoria of Saxe-Coburg-Saalfeld; had issue |
| Princess Augusta Sophia | 8 November 1768 | 22 September 1840 | |
| Princess Elizabeth | 22 May 1770 | 10 January 1840 | married 1818, Frederick, Landgrave of Hesse-Homburg; no issue |
| Ernest Augustus, King of Hanover | 5 June 1771 | 18 November 1851 | married 1815, Frederica of Mecklenburg-Strelitz; had issue |
| Augustus, Duke of Sussex | 27 January 1773 | 21 April 1843 | married (1) 1793 (in contravention with the Royal Marriages Act 1772) Lady Augusta Murray; annulled 1794; had issue; (2) 1831 (again in contravention of the Act) Cecilia Underwood, Duchess of Inverness; no issue |
| Adolphus, Duke of Cambridge | 24 February 1774 | 8 July 1850 | married 1818, Princess Augusta of Hesse-Kassel; had issue |
| Princess Mary, Duchess of Gloucester | 25 April 1776 | 30 April 1857 | married 1815, Prince William, Duke of Gloucester; no issue |
| Princess Sophia | 3 November 1777 | 27 May 1848 | |
| Prince Octavius | 23 February 1779 | 3 May 1783 | |
| Prince Alfred | 22 September 1780 | 20 August 1782 | |
| Princess Amelia | 7 August 1783 | 2 November 1810 |
| Name | Birth | Death | Notes |
|---|---|---|---|
| Princess Charlotte Augusta of Wales | 7 January 1796 | 6 November 1817 | married 1816, Prince Leopold of Saxe-Coburg-Saalfeld; no surviving issue, died in first childbirth |
| Princess Charlotte of Clarence | 21 March 1819 | 21 March 1819 | |
| Princess Elizabeth of Clarence | 10 December 1820 | 4 March 1821 | |
| Queen Victoria | 24 May 1819 | 22 January 1901 | married 1840, Prince Albert of Saxe-Coburg and Gotha; had issue |
| George V of Hanover | 27 May 1819 | 12 June 1878 | married 1843, Marie of Saxe-Altenburg; had issue |
| Prince George, Duke of Cambridge | 26 March 1819 | 17 March 1904 | married 1847, Sarah Fairbrother; had issue (in contravention of Royal Marriages Act 1772. All issue illegitimate) |
| Princess Augusta of Cambridge | 19 July 1822 | 5 December 1916 | married 1843, Friedrich Wilhelm, Grand Duke of Mecklenburg-Strelitz; had issue |
| Princess Mary Adelaide of Cambridge | 27 November 1833 | 27 October 1897 | married 1866, Francis, Duke of Teck; had issue |
| Name | Birth | Death | Notes |
|---|---|---|---|
| Victoria, Princess Royal | 21 November 1840 | 5 August 1901 | married 1858 Frederick III, German Emperor and King of Prussia; had issue |
| Edward VII | 9 November 1841 | 6 May 1910 | married 1863, Princess Alexandra of Denmark; had issue |
| Princess Alice | 25 April 1843 | 14 December 1878 | married 1862, Louis IV, Grand Duke of Hesse and by the Rhine; had issue |
| Alfred, Duke of Saxe-Coburg and Gotha | 6 August 1844 | 31 July 1900 | married 1874, Grand Duchess Marie Alexandrovna of Russia; had issue |
| Princess Helena | 25 May 1846 | 9 June 1923 | married 1866, Prince Christian of Schleswig-Holstein; had issue |
| Princess Louise, Duchess of Argyll | 18 March 1848 | 3 December 1939 | married 1871, John Campbell, 9th Duke of Argyll; no issue |
| Prince Arthur, Duke of Connaught and Strathearn | 1 May 1850 | 16 January 1942 | married 1879, Princess Louise Margaret of Prussia; had issue |
| Prince Leopold, Duke of Albany | 7 April 1853 | 28 March 1884 | married 1882, Princess Helena of Waldeck and Pyrmont; had issue |
| Princess Beatrice | 14 April 1857 | 26 October 1944 | married 1885, Prince Henry of Battenberg; had issue |
| Ernest Augustus, Crown Prince of Hanover | 21 September 1845 | 14 November 1923 | married 1878, Princess Thyra of Denmark; had issue |
| Princess Frederica of Hanover | 9 January 1848 | 16 October 1926 | married 1880, Baron Alfons von Pawel-Rammingen; no surviving issue |
| Princess Marie of Hanover | 3 December 1849 | 4 June 1904 | |
| Adolf Friedrich V, Grand Duke of Mecklenburg-Strelitz | 22 July 1848 | 11 June 1914 | married 1877, Princess Elisabeth of Anhalt; had issue |
| Princess Victoria Mary of Teck | 26 May 1867 | 24 March 1953 | married 1893, Prince George, Duke of York, later George V; had issue |
| Prince Adolphus of Teck | 13 August 1868 | 23 October 1927 | married 1894, Lady Margaret Evelyn Grosvenor; had issue |
| Prince Francis of Teck | 9 January 1870 | 22 October 1910 | |
| Prince Alexander of Teck | 14 April 1874 | 16 January 1957 | married 1904, Princess Alice of Albany; had issue |
Princess Charlotte, the Prince of Wales's daughter, was, for the whole of her life, the King's only legitimate grandchild. With her death in 1817, the King's unmarried sons scrambled to find appropriate wives from among the German princesses and produce heirs to the throne; but before this, many had been content to keep mistresses or, in the cases of the Prince of Wales and the Duke of Sussex, to marry invalidly. As a result, George III and Queen Charlotte had numerous illegitimate grandchildren.
| Name | Birth | Death | Notes |
|---|---|---|---|
| Alleged children of Frederick, Duke of York | |||
| Captain Charles Hesse | 1786 | 1832 | |
| Colonel John George Nathaniel Gibbes | 30 March 1787 | 5 July 1873 | Legally his father was John Gibbes, his mother's husband. |
| Captain John Molloy | c. 1789 | 6 October 1867 | Said to be the son of Sarah Hussey, Countess of Tyrconnel, fostered and raised by the Molloys. |
| Frederick George Vandiest | 1800 | 1848 | |
| Louisa Ann Vandiest | 1802 | 1890 | |
| Children of William IV (then Duke of Clarence) by Dorothea Jordan | |||
| George FitzClarence, 1st Earl of Munster | 29 January 1794 | 20 March 1842 | married 1819, Mary Wyndham; had issue |
| Henry FitzClarence | 27 March 1795 | September 1817 | Died unmarried, aged 22. |
| Sophia Sidney, Baroness De L'Isle and Dudley | August 1796 | 10 April 1837 | married 1825, Philip Sidney, 1st Baron De L'Isle and Dudley; had issue |
| Lady Mary Fox | 19 December 1798 | 13 July 1864 | married 1824, General Charles Richard Fox; no issue |
| Lord Frederick FitzClarence | 9 December 1799 | 30 October 1854 | married 1821, Lady Augusta Boyle; had issue |
| Elizabeth Hay, Countess of Erroll | 17 January 1801 | 16 January 1856 | married 1820, William Hay, 18th Earl of Erroll; had issue |
| Lord Adolphus FitzClarence | 18 February 1802 | 17 Mary 1856 | |
| Lady Augusta Hallyburton | 17 November 1803 | 8 December 1865 | married 1827, the Hon. John Kennedy-Erskine; had issue; married 1854, Lord John Hallyburton; no issue |
| Lord Augustus FitzClarence | 1 March 1805 | 14 June 1854 | married 1845, Sarah Gordon; had issue |
| Amelia Cary, Viscountess Falkland | 21 March 1807 | 2 July 1858 | married 1830, Lucius Cary, 10th Viscount Falkland |
| Children of Augustus, Duke of Sussex, by Lady Augusta Murray | |||
| Sir Augustus d'Este | 1794 | 1848 | |
| Augusta Wilde, Baroness Truro | 1801 | May 1866 | married 1845, Thomas Wilde, 1st Baron Truro; no issue |
| Alleged child of Sophia | |||
| Thomas Garth | 1800 | 1875 | Alleged child born from Thomas Garth. |