![]() | 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 |
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![]() | ![]() | Arno Klemm b.1886 d. | ||||||
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![]() | Horst Günter Klemm b.1920 d. | ![]() | ||||||
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![]() | Arno Wolfgang Klemm b.1925 d. | ![]() | ![]() | |||||
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![]() | ![]() | ![]() | Paul Cohnstädt b.1852 d.1926 | |||||
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![]() | ![]() | Käthe Cohnstädt b.1892 d. | ![]() | ![]() | Valentin Mühsam b.1826 d.1897 Schweidnitz, Poland | |||
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![]() | ![]() | ![]() | Anna Mühsam b.1855 d. | ![]() | Bertha Bielschowsky b.1829 d.1911 Schweidnitz, Poland | ![]() | ||
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