R M O Hill, b: -

^{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}


		^{Capt-Arthur Blundell Hill}^{b.1837 Gweedor, County Donegal d.1923}

	^{Arthur FitzGerald Sandys Hill}^{b.1876 d.1961}	^{Helen Emily Chenevix-Trench}^{b. d.1935}

^{R M O Hill}^{b. d.}		^{Col-Frederick Trench-Gascoig}^{b. d.}

	^{Cynthia Mary Trench-Gascoigne}^{b.1898 d.1990}	^{Laura Gwendolen D. Galton}^{b. d.}



	^Lionel Hall^{b. Park Gate, Sussex d.}

^P S Hall^{b. d.}