title










	^{Alida Vellekoop}^{b. d.}






			^{Jan Hendrik Polhuijs}^{b. d.}



	^{Catharina Polhuijs}^{b. Rotterdam d.1940 Den Haag}



			^{Yda van Langeveld}^{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}


^{Jan van der Heijde}^{b.1923 Den Haag d.1991 Voorburg}

^{Marinus van der Heijde}^{b.1925 Den Haag d.}

^{Cornelis van der Heijde}^{b.1927 Den Haag d.}

^{Jan Frederik van der Heijde}^{b.1929 Den Haag d.}

^{Marten van der Heijde}^{b.1931 Den Haag d.}			^{Jan Fredrik Scheffer}^{b.1843 Rotterdam, Holland d.1904 Rotterdam, Holland}

^{Geertje van der Heijde}^{b.1932 Den Haag d.}		^{Marinus Scheffer}^{b.1873 Delfshaven, Holland d.1946 The Hague, Holland}	^{Gerardina Schipperus}^{b.1845 Rotterdam, Holland d.1916 Rotterdam, Holland}

^{Jacob van der Heijde}^{b.1934 Den Haag d.}	^{Johanna Hendrika Scheffer}^{b.1898 Rotterdam d.1989 Den Haag}		^{Jan Hendrik Polhuijs}^{b. d.}

^{Catharina van der Heijde}^{b.1936 Den Haag d.}		^{Catharina Polhuijs}^{b. Rotterdam d.1940 Den Haag}	^{Yda van Langeveld}^{b. d.}

^{Johan van der Heijde}^{b.1940 Den Haag 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}










		^{Jan Fredrik Scheffer}^{b.1843 Rotterdam, Holland d.1904 Rotterdam, Holland}

	^{Marinus Scheffer}^{b.1873 Delfshaven, Holland d.1946 The Hague, Holland}	^{Gerardina Schipperus}^{b.1845 Rotterdam, Holland d.1916 Rotterdam, Holland}

^{Johanna Hendrika Scheffer}^{b.1898 Rotterdam d.1989 Den Haag}		^{Jan Hendrik Polhuijs}^{b. d.}

	^{Catharina Polhuijs}^{b. Rotterdam d.1940 Den Haag}	^{Yda van Langeveld}^{b. d.}

^{1899 Boer War begins}
^{1903 Wright brothers 1st plane flight}
^{1912 Titanic sinks on maiden voyage}
^{1914 - 1919 World War I}
^{1922 USSR formed by Soviet states}

^{1837 Queen Victoria assumes throne}
^{1854 Crimean War with Russia}
^{1869 Opening of Suez Canal}
^{1871 Franco - Prussian War}
^{1895 Marconi invents wireless telegraphy}

^{1798 Irish revolt against English rule}
^{1804 Napoleon becomes French Emporer}
^{1805 Battle of Trafalgar, Nelson killed}
^{1815 Battle of Waterloo, Napoleon defeat}
^{1830 French Revolution}


^{Gerardina Scheffer}^{b.1894 Rotterdam d.1894 Delft}			^{Jacob Scheffer}^{b.1790 Sciedam, Holland d.1852 Rotterdam, Holland}

^{Jacob Scheffer}^{b.1910 Den Haag d.}		^{Jan Fredrik Scheffer}^{b.1843 Rotterdam, Holland d.1904 Rotterdam, Holland}	^{Maria van Deutekon}^{b.1797 Delft, Holland d.1872 Rotterdam, Holland}

^{Johanna Wilhelmina Scheffer}^{b.1912 Den Haag d.}	^{Marinus Scheffer}^{b.1873 Delfshaven, Holland d.1946 The Hague, Holland}		^{Jacobus Schipperus}^{b.1814 Rotterdam, Holland d.1905 Rotterdam, Holland}

^{Pieternella Jacoba Scheffer}^{b.1916 Den Haag d.}		^{Gerardina Schipperus}^{b.1845 Rotterdam, Holland d.1916 Rotterdam, Holland}	^{Kaatje van Teerling}^{b.1819 Rotterdam, Holland d.1905 Rotterdam, Holland}

^{Yda Scheffer}^{b.1895 Rotterdam d.1977 Putten}

^{Jan Fredrik Scheffer}^{b.1896 Rotterdam d.1918 Den Haag}		^{Jan Hendrik Polhuijs}^{b. d.}

^{Johanna Hendrika Scheffer}^{b.1898 Rotterdam d.1989 Den Haag}	^{Catharina Polhuijs}^{b. Rotterdam d.1940 Den Haag}

^{Marinus Scheffer}^{b.1902 Rotterdam d.1977 Ermelo}		^{Yda van Langeveld}^{b. d.}

^{Catharina Scheffer}^{b.1905 Den Haag d.1996 Putten}

^{Maria Gerardina Scheffer}^{b.1907 Den Haag d.1965 Den Haag}

^{Johanna Elisabeth Scheffer}^{b.1909 Den Haag d.}