F T W Trench-McMahon, b: -

^{1964 - 1973 Vietnam War}
^{1969 Armstrong first person on moon}
^{1986 Nuclear disaster at Chernobyl}
^{1989 Berlin wall falls}
^{1991 Persian Gulf War}

^{1914 - 1918 World War I}
^{1922 USSR formed by Soviet states}
^{1939 - 1945 World War II}
^{1945 Atomic bomb detonated (Hiroshima)}
^{1950 Korean War begins}

^{1871 Franco - Prussian War}
^{1895 Marconi invents wireless telegraphy}
^{1899 Boer War begins}
^{1903 Wright brothers 1st plane flight}
^{1912 Titanic sinks on maiden voyage}


		^{Wilbraham FitzJohn Trench}^{b.1873 d.1939}

	^{Chalmers Edward FitzJohn Trench}^b.1909 d.	^{Mary Alicia Cross}^{b. d.1930}

^{F T W Trench-McMahon}^{b. d.}		^{Charles St.George Orpen}^{b. Lisheens, County Dublin. d.}

	^{Beatrice Esther Orpen}^{b. d.1980}



	^{Joseph McMahon}^{b. d.}

^{H C McMahon}^{b. d.}