| 1922 USSR formed by Soviet states 1939 - 1945 World War II 1945 Atomic bomb detonated (Hiroshima) 1950 Korean War begins 1964 - 1973 Vietnam War  | 1895 Marconi invents wireless telegraphy 1899 Boer War begins 1903 Wright brothers 1st plane flight 1912 Titanic sinks on maiden voyage 1914 - 1918 World War I  | 1830 French Revolution 1837 Queen Victoria assumes throne 1854 Crimean War with Russia 1869 Opening of Suez Canal 1871 Franco - Prussian War  | 
![]()  | ![]()  | ![]()  |  George Godolphin Osbourne b.1828 9th Duke of Leeds d.1895  | |||||
![]()  | ![]()  |  George Godolphin Osbourne b.1862 10th. Duke of Leeds d.1927  |  Hon-Frances Georgiana Pitt-Rivers b.1836 d.1896  | |||||
![]()  |  Sir-John F. Godolphin Osbourne b.1901 11th. Duke of Leeds d.1963  | ![]()  |  George F D Lambton b. 2nd Earl of Durham d.  | |||||
![]()  | ![]()  |  Lady-Katherine Frances Lambton b.1862 d.1952  |  Lady-Beatrix Frances Hamilton b. d.  | |||||
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![]()  |  C F Vatcher b. d.  | |||||||
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