Karen Margrethe Andersen, b: 1900

^{1914 - 1918 World War I}
^{1922 USSR formed by Soviet states}
^{1939 - 1945 World War II}
^{1945 Atomic bomb detonated (Hiroshima)}
^{1950 Korean War begins}

^{1871 Franco - Prussian War}
^{1895 Marconi invents wireless telegraphy}
^{1899 Boer War begins}
^{1903 Wright brothers 1st plane flight}
^{1912 Titanic sinks on maiden voyage}

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


		^{Nis Petersen}^{b.1815 Diernaes, Denmark d.1899 Langesoe Forpagterg, Fyn}

	^{Ingvard Andreas Petersen}^{b.1858 Gudbjerg, Fyn, Denmark d.1937 Ordrup Alderdomshjem}	^{Karen Johanne Gjerstrup}^{b.1819 Sct Joergens Co., Sweden d.1894 Svendborg}

^{Kaj William Petersen}^{b.1892 Kalundborg , Denmark d.1949 Slagelse, Denmark}

	^{Thora Marie Dorthea Hansen}^{b.1859 Svendborg, Sweden d.1937 Ordrup Alderdomshjem}





^{Karen Margrethe Andersen}^{b.1900 Nakskov, Denmark d.1955 Skive}