Friedrich (Fritz) Wolff, b: 1890

^{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}



		^{August Wolff}^{b.1860 d.1916}

^Heinz Wolff^{b.1920 d.1920}	^{Friedrich (Fritz) Wolff}^{b.1890 Hannover, Germany d. , Brazil}		^{Adolf Bielschowsky}^{b.1833 d.1898 Breslau, Poland}

^{Herbert Wolff}^b.1921 d.		^{Olga Bielschowsky}^{b.1865 d.1911 Breslau, Poland}	^{Friederike Bielschowsky}^{b.1839 d.1908 Breslau, Poland}

^Peter Wolff^b.1922 d.

^{Erich Kurt Wolff}^b.1927 d.

	^{Margarete Davids}^{b.1890 d. , Brazil}