title

^{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}

^{1762 Catherine II becomes Czarina/Russia}
^{1770 Cook discovers New South Wales}
^{1776 America declares independence}
^{1789 Geo. Washington 1st USA president}
^{1789 French Revolution begins}








	^{Barbera Verkade}^{b.1765 Schiedam, Holland d.1813 Schiedam, Holland}

^{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}




^{Catharina Dijkstra}^{b.1929 d.1990}

^{Reinder Dijkstra}^b.1934 d.

^{Marie Dijkstra}^b.1935 d.			^{Jan Fredrik Scheffer}^{b.1843 Rotterdam, Holland d.1904 Rotterdam, Holland}

^{Geertje Dijkstra}^b.1938 d.		^{Marinus Scheffer}^{b.1873 Delfshaven, Holland d.1946 The Hague, Holland}	^{Gerardina Schipperus}^{b.1845 Rotterdam, Holland d.1916 Rotterdam, Holland}

^{Klaas Dijkstra}^b.1940 d.	^{Gerardina Scheffer}^{b.1894 Rotterdam d.1894 Delft}		^{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 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}

^{Gerardina Scheffer}^{b.1894 Rotterdam d.1894 Delft}		^{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}




			^Adam Bakker^{b. d.}



	^{Johanna Bakker}^{b.1797 's Gravenhage d.1848 Delft}



			^{Roeltje van Rozendaal}^{b. d.}

^{1989 Berlin wall falls}
^{1991 Persian Gulf War}
^{1991 Break-up of the Soviet Union}
^{1998 Hong Kong reverts to Chinese}

^{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}








	^{Petrus Willem (Piet) Arts}^{b.1900 Alkmaar, Holland d.1954 Rotterdam, Holland}