Gerardina Schipperus, b: 1845 - Rotterdam, Holland

^{1914 - 1919 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}




^{Gerardus Scheffer}^{b.1885 Delfshaven d.1964 Rotterdam}



^{Clasina Catharina Scheffer}^{b.1882 Schiedam d.1969 Rotterdam}

			^{Leendert Schipperus}^{b. d.1842 Rotterdam}

		^{Jacobus Schipperus}^{b.1814 Rotterdam, Holland d.1905 Rotterdam, Holland}

	^{Gerardina Schipperus}^{b.1845 Rotterdam, Holland d.1916 Rotterdam, Holland}

		^{Kaatje van Teerling}^{b.1819 Rotterdam, Holland d.1905 Rotterdam, Holland}



^{Jan Fredrik Scheffer}^{b.1879 Schiedam d.1968 Rotterdam}

^{Pieternella Jacoba Scheffer}^{b.1880 Schiedam d.1915 Rotterdam}

^{1964 - 1973 Vietnam War}
^{1969 Armstrong first person on moon}
^{1986 Nuclear disaster at Chernobyl}
^{1989 Berlin wall falls}
^{1991 Persian Gulf War}

^{1914 - 1919 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}




			^van Krimpen^{b. d.}



	^{Willem van Krimpen}^{b.1870 d.1959 Rotterdam, Holland}






			^Loonstijn^{b. d.}



	^{Sara Johanna Loonstijn}^{b. d.}

^{1945 Atomic bomb detonated (Hiroshima)}
^{1950 Korean War begins}
^{1964 - 1973 Vietnam War}
^{1969 Armstrong first person on moon}
^{1986 Nuclear disaster at Chernobyl}

^{1903 Wright brothers 1st plane flight}
^{1912 Titanic sinks on maiden voyage}
^{1914 - 1919 World War I}
^{1922 USSR formed by Soviet states}
^{1939 - 1945 World War II}

^{1854 Crimean War with Russia}
^{1869 Opening of Suez Canal}
^{1871 Franco - Prussian War}
^{1895 Marconi invents wireless telegraphy}
^{1899 Boer War begins}


			^{Willem Frederik (Willem) Snijders}^{b.1840 Delft, Holland d.1916 Rotterdam, Holland}

		^{Antoni Snijders}^{b.1877 Dordrecht, Holland d.1950 Rotterdam, Holland}	^{Alida Vellekoop}^{b. d.}

^{Maarten Snijders}^b.1944 d.	^{Antonie Snijders}^{b.1909 Dordrecht, Holland d.1974 Rotterdam, Holland}		^{Jan Fredrik Scheffer}^{b.1843 Rotterdam, Holland d.1904 Rotterdam, Holland}

^{Antonie Snijders}^b.1946 d.		^{Maria Scheffer}^{b.1877 Schiedam, Holland d.1917 Rotterdam, Holland}	^{Gerardina Schipperus}^{b.1845 Rotterdam, Holland d.1916 Rotterdam, Holland}

^{Arie Snijders}^b.1948 d.

^{Leo Snijders}^b.1950 d.

^{Maria Snijders}^b.1954 d.	^{Helena Koorneef}^{b. d.}

^{Inneke Snijders}^{b. d.}

^{Andre Snijders}^b.1957 d.










	^{Helena Koorneef}^{b. d.}