Käthe Bielschowsky, b: 1881 -

^{1914 - 1918 World War I}
^{1922 USSR formed by Soviet states}
^{1939 - 1945 World War II}
^{1945 Atomic bomb detonated (Hiroshima)}
^{1950 Korean War begins}

^{1871 Franco - Prussian War}
^{1895 Marconi invents wireless telegraphy}
^{1899 Boer War begins}
^{1903 Wright brothers 1st plane flight}
^{1912 Titanic sinks on maiden voyage}

^{1815 Battle of Waterloo, Napoleon defeat}
^{1830 French Revolution}
^{1837 Queen Victoria assumes throne}
^{1854 Crimean War with Russia}
^{1869 Opening of Suez Canal}




	^Otto Sackur^{b.1880 d.1914}

^Toni Sackur^b.1910 d.

^{Irene Sackur}^b.1913 d.			^{Seelig Bielschowsky}^{b.1811 d.1895 Namslau, Opole, Poland}

^Otto Sackur^{b.1915 d.1991}		^{Gustav Bielschowsky}^{b.1850 d.1895 Breslau, Poland}	^{Rosalie Schweitzer}^{b.1812 d.1893 Namslau, Opole, Poland}

	^{Käthe Bielschowsky}^{b.1881 d.1956}		^Louis Sachs^{b.1820 d.1868 Breslau, Poland}

		^{Rosette Sachs}^{b.1858 d.1939 Berlin, Germany}	^{Auguste Bielschowsky}^{b.1829 d.1877}