Leonard Wilfred Jackson, b: 1921 - Launceston, Australia

^{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}



	^{William Henry Jackson}^{b.1879 d.1945 Launceston, Australia}

^{Leonard Wilfred Jackson}^{b.1921 Launceston, Australia d.1993 Sydney, NSW, Australia}		^{Alfred Davis Crocker}^{b.1845 Launceston, Australia d.1921}

	^{Elsie May Crocker}^{b.1880 Launceston, Australia d.1961 Launceston, Australia}	^{Sarah Richards}^{b.1844 Launceston, Australia d.1922 Launceston, Australia}





^{Olive Walton}^{b.1906 d.1989 Sydney, NSW, Australia}