George K. Cogswell, b: -

^{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}

^{1770 Cook discovers New South Wales}
^{1776 America declares independence}
^{1789 Geo. Washington 1st USA president}
^{1789 French Revolution begins}
^{1798 Irish revolt against English rule}




^{Carl C. Cogswell}^b.1889 d.	^{George K. Cogswell}^{b. d.}

^{Grace Cogswell}^b.1890 d.

^{Faye Cogswell}^b.1893 d.			^{Cornelius O'Leary}^{b.1804 Youghal, Cork, Ireland d.1890 Michigan}

^{Guy K. Cogswell}^b.1896 d.		^{Thomas J. O'Leary}^{b.1835 Milan, Ohio d.1903 Hutchinson, Kansas}	^{Jane Griffen}^{b.1779 Charleville, Ireland d.1886 Milan, Erie, Ohio}

	^{Eliza J. O'Leary}^{b.1870 d.1927}		^{Richard H. Boyle}^{b. d.}

		^{Angeline Boyle}^{b.1846 Ohio d.1914 Hutchinson, Kansas}	^{Eliza J. Lutts}^{b. d.}