Leonie Bielschowsky, b: 1899 -

^{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}




	^Paul Heller^b.1891 d.

^Vera Heller^b.1925 d.

^{Doris Heller}^b.1928 d.			^{Alexander Bielschowsky}^{b.1836 d.1904}

		^{Georg Bielschowsky}^b.1865 d.	^{Dorothea Haase}^{b.1842 d.1930}

	^{Leonie Bielschowsky}^b.1899 d.

		^Klara Thom^{b.1873 d.1948, California}