Thomas Mason Lea, b: 1849 -

^{1922 USSR formed by Soviet states}
^{1939 - 1945 World War II}
^{1945 Atomic bomb detonated (Hiroshima)}
^{1950 Korean War begins}
^{1964 - 1973 Vietnam War}

^{1895 Marconi invents wireless telegraphy}
^{1899 Boer War begins}
^{1903 Wright brothers 1st plane flight}
^{1912 Titanic sinks on maiden voyage}
^{1914 - 1918 World War I}

^{1830 French Revolution}
^{1837 Queen Victoria assumes throne}
^{1854 Crimean War with Russia}
^{1869 Opening of Suez Canal}
^{1871 Franco - Prussian War}



		^Thomas Lea^{b.1821 d.1884}

	^{Thomas Mason Lea}^{b.1849 d.1890}		^{Thomas Mason}^{b. d.}

^{Annie Jane Lea}^{b.1875 d.1943}		^{Elizabeth Mason}^{b. d.}	^{Margaret Burns}^{b. d.}

^Alice Lea^{b.1882 d.1939}

^{Gertrude Lea}^b.1886 d.		^{Peter Hilton}^{b.1820 d.1880}

	^{Annie Jane Hilton}^{b.1848 d.1887}

		^Mary Reason^{b.1823 d.1889}