Johann Henrich Prehn, b: -

^{1815 Battle of Waterloo, Napoleon defeat}
^{1830 French Revolution}
^{1837 Queen Victoria assumes throne}
^{1854 Crimean War with Russia}
^{1869 Opening of Suez Canal}

^{1789 Geo. Washington 1st USA president}
^{1789 French Revolution begins}
^{1798 Irish revolt against English rule}
^{1804 Napoleon becomes French Emperor}
^{1805 Battle of Trafalgar, Nelson killed}

^{1712 Religious warfare in Switzerland}
^{1740 War of Austrian Succession begins}
^{1762 Catherine II becomes Czarina/Russia}
^{1770 Cook discovers New South Wales}
^{1776 America declares independence}




			^{Johann Henrich Prehn}^{b. d.}

	^{Lorenz Prehn}^b.1710 d.

	^Peter Prehn^{b.1718 Flensburg d.1777}



			^{Hanna Petersen}^{b. d.}