Harriet Georgiana Cosby, b: 1811 -

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

^{1789 French Revolution begins}
^{1798 Irish revolt against English rule}
^{1804 Napoleon becomes French Emperor}
^{1805 Battle of Trafalgar, Nelson killed}
^{1815 Battle of Waterloo, Napoleon defeat}

^{1740 War of Austrian Succession begins}
^{1762 Catherine II becomes Czarina/Russia}
^{1770 Cook discovers New South Wales}
^{1776 America declares independence}
^{1789 Geo. Washington 1st USA president}


			^{Frederick Trench}^{b.1724 Woodlaw, County Galway d.1797}

		^{Francis Trench}^{b.1757 Sopwel, County Tipperary d.1829}	^{Mary Sadleir}^{b. d.}

^{Hon-Frederic Sydney C. Trench}^{b. d.}	^{Frederick Mason Trench}^{b. Castle Oliver, Yks. d.1880}		^Henry Mason^{b. d.}

^{Hon-Harriet Mary Trench}^{b. d.}		^Mary Mason^{b. d.}

^{Hon-Charlotte Elizabeth Trench}^{b. d.}

^{Cosby Godolphin Trench}^{b.1844 d.1925}		^{Thomas Cosby}^{b. d.}

	^{Harriet Georgiana Cosby}^{b.1811 d.1845 Woodlaw, County Galway}

		^{Charlotte Elizabeth Kelly}^{b. d.}