Willem Oomsen, b: 1820 - Maartensdijk, Netherlands

^{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 Emperor}
^{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}



	^{Hannis Oomsen}^{b.1767 Oldenburg, Germany d.1827 Maartensdijk, Netherlands}

^{Willem Oomsen}^{b.1820 Maartensdijk, Netherlands d.1859 Maartensdijk, Netherlands}		^{Geurt van Velzen}^{b. Woudenberg, Netherlands d.}

	^{Marretje van Velzen}^{b.1775 Maartensdijk, Netherlands d.1847 Maartensdijk, Netherlands}	^{Jannetje Lodder}^{b.1753 Maartensdijk, Netherlands d.}



	^{Jan Hummen Ruttenberg}^{b. d.}

^{Gerritje Ruttenberg}^{b.1811 Otterloo, Netherlands d.}

	^{Berendina Gerrits}^{b. d.}