Sveinn Jónatansson, b: 1851

^{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}

^{1804 Napoleon becomes French Emperor}
^{1805 Battle of Trafalgar, Nelson killed}
^{1815 Battle of Waterloo, Napoleon defeat}
^{1830 French Revolution}
^{1837 Queen Victoria assumes throne}



		^{Jónatan Jónatansson}^{b.1827 Vík, Iceland d.1906}

^{María Jóhanna Sveinsdóttir}^{b.1876 Þangskáli, Iceland d.1929}	^{Sveinn Jónatansson}^{b.1851 Hof, Iceland d.1936 Tjörn, Iceland}		^{Magnús Jónsson}^{b.1802 Steinnes, Iceland d.}

^{Jón Sigurður Sveinsson Skagfjörd}^{b.1883 Hraun, Iceland d.1955 Gimli, Manitoba, Canada}		^{María Magnúsdóttir}^{b.1827 Ásbúðir, Iceland d.1892 Þangskáli, Iceland}	^{Sigurlaug Guðlaugsdóttir}^{b.1801 Steinnýjarstaðir, Iceland d.}

^{Steinn Léo Sveinsson}^{b.1886 Hraun, Iceland d.1957}

^{Sveinn Mikael Sveinsson}^{b.1890 Hraun, Iceland d.1932 Tjörn, Iceland}

^{Guðrún Sveinsdóttir}^{b.1892 Hraun, Iceland d.1967}	^{Guðbjörg Jónsdóttir}^{b.1849 Hóll, Iceland d.1933 Tjörn, Iceland}