L Pétursdóttir, b: -

^{1945 Atomic bomb detonated (Hiroshima)}
^{1950 Korean War begins}
^{1964 - 1973 Vietnam War}
^{1969 Armstrong first person on moon}
^{1986 Nuclear disaster at Chernobyl}

^{1903 Wright brothers 1st plane flight}
^{1912 Titanic sinks on maiden voyage}
^{1914 - 1918 World War I}
^{1922 USSR formed by Soviet states}
^{1939 - 1945 World War II}

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




^{G Guðjónsson}^{b. d.}	^{Guðjón Ásgeir Jónsson}^{b.1914 d.1995}

^{G Guðjónsdóttir}^{b. d.}

^{H P Guðjónsson}^{b. d.}			^{Sigurbjörn Jónsson}^{b.1864 Norðtungus, Mýrasýsla d.1952}

^{S Guðjónsson}^{b. d.}		^{Pétur Sigurbjörnsson}^{b.1900 Innrahólmssókn, Iceland d.1966}	^{Sigríður Kristjánsdóttir}^{b.1859 Gar, Borgarfjarðarsýsla) d.1937}

^{G V Guðjónsson}^{b. d.}	^{L Pétursdóttir}^{b. d.}

		^{Helga Jónsdóttir}^{b.1905 Görðum, Iceland d.1996 Sjúkrahúsi, Iceland}