Klara Anina Vilhelmina Petersen, b: 1863 -

^{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}




	^{Julius August Rendtorff}^{b.1870 d.1945 Soend, 3 th.Copemhagen}



^{Ebba Elise Ida Rendtorff}^{b.1895 Lyngbyvej 423, Denmark d.1976 Gentofte}

		^{Poul Gottfred Petersen}^{b.1842 Soenderballe, Denmark d.1897 Uvelse, Slangerup.}

	^{Klara Anina Vilhelmina Petersen}^{b.1863 d.1949 Soenderbor, Copenhagen}		^{Nis Petersen}^{b.1815 Diernaes, Denmark d.1899 Langesoe Forpagterg, Fyn}

		^{Ida Christine Petersen}^{b.1849 Framlev Sogn, Denmark d.1936 Copenhagen}	^{Karen Johanne Gjerstrup}^{b.1819 Sct Joergens Co., Sweden d.1894 Svendborg}