Pieter Roelof de Gier, b: 1835 - Harmelen, Netherlands

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

^{1804 Napoleon becomes French Emperor}
^{1805 Battle of Trafalgar, Nelson killed}
^{1815 Battle of Waterloo, Napoleon defeat}
^{1830 French Revolution}
^{1837 Queen Victoria assumes throne}

^{1770 Cook discovers New South Wales}
^{1776 America declares independence}
^{1789 Geo. Washington 1st USA president}
^{1789 French Revolution begins}
^{1798 Irish revolt against English rule}


		^{Jan Floren de Gier}^{b.1777 d.1856 Jaarsveld, Netherlands}

	^{Johannes de Gier}^{b.1809 Lopik, Netherlands d.1868 Harmelen, Netherlands}	^{Maria Kraijestijn}^{b.1774 d.1852 Jaarsveld, Netherlands}

^{Pieter Roelof de Gier}^{b.1835 Harmelen, Netherlands d.}		^{Cornelis van Dijk}^{b. d.}

	^{Janna van Dijk}^{b.1808 Lopik, Netherlands d.1890 Harmelen, Netherlands}	^{Aletta Bosch}^{b. d.}



	^{Jacob de Bruijn}^{b. d.}

^{Cornelia de Bruijn}^{b.1838 Zegveld, Netherlands d.}

	^{Maagje Spijker}^{b. d.}