William Cosby Trench, b: 1869 - Clonodfoy Castle, County Limerick

^{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}

^{1804 Napoleon becomes French Emperor}
^{1805 Battle of Trafalgar, Nelson killed}
^{1815 Battle of Waterloo, Napoleon defeat}
^{1830 French Revolution}
^{1837 Queen Victoria assumes throne}


			^{Frederick Mason Trench}^{b. Castle Oliver, Yks. d.1880}

		^{Hon-Frederic Sydney C. Trench}^{b. d.}	^{Harriet Georgiana Cosby}^{b.1811 d.1845 Woodlaw, County Galway}

^{Capt-Percy Richard Oliver Trench}^{b.1894 d.1917}	^{William Cosby Trench}^{b.1869 Clonodf, County Limerick d.1944}		^{William Thomas Le Poer Trench}^{b.1803 3rd. Earl of Clancarty d.1872}

^{Walter Frederick Oliver Trench}^{b.1899 d.1960}		^{Lady-Anne Le Poer Trench}^{b. d.1924}	^{Lady Sarah Juliana Butler}^{b. d.}

^{Algernon Oliver Trench}^{b.1900 d.1955}

^? Trench^{b.1908 d. Died infant}		^{Walter Taylor Newton S. Taylor}^{b. d.}

	^{Frances Elizabeth Taylor}^{b. d.}