Cmdr-Henry James F. Cavendish, b: 1893 -

^{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}


		^{Lt.Col. William F. Cavendish}^{b. d.}

	^{Capt-Henry F. C. Cavendish}^{b.1854 Ayot St.Lawrence, Herts. d.1928}	^{Lady Emily Lambton}^{b. d.}

^{Cmdr-Henry James F. Cavendish}^{b.1893 d.1956}		^{George Godolphin Osbourne}^{b.1828 9th Duke of Leeds d.1895}

	^{Lady-Harriet C. G. Osbourne}^{b.1867 Farnham Royal, Yks. d.1922}	^{Hon-Frances Georgiana Pitt-Rivers}^{b.1836 d.1896}



	^{Hon. James Dunsmuir}^{b. d.}

^{Dola Frances Dunsmuir}^{b.1913 d.1966}