Cornelius O'Leary, b: 1804 - Youghal, Ireland

^{1899 Boer War begins}
^{1903 Wright brothers 1st plane flight}
^{1912 Titanic sinks on maiden voyage}
^{1914 - 1918 World War I}
^{1922 USSR formed by Soviet states}

^{1837 Queen Victoria assumes throne}
^{1854 Crimean War with Russia}
^{1869 Opening of Suez Canal}
^{1871 Franco - Prussian War}
^{1895 Marconi invents wireless telegraphy}

^{1798 Irish revolt against English rule}
^{1804 Napoleon becomes French Emperor}
^{1805 Battle of Trafalgar, Nelson killed}
^{1815 Battle of Waterloo, Napoleon defeat}
^{1830 French Revolution}




	^{Ellen O'Leary}^{b.1824 Youghal, Ireland d.1879 Enterprise, Ohio}		^{Cornelius O'Leary}^{b.1804 Youghal, Cork, Ireland d.1890 Michigan}

	^{Elizabeth O'Leary}^{b.1828 Youghal, Ireland d.1890 Kimball, Erie, Ohio}

	^{John O'Leary}^{b.1829 Ireland d. Adrian, Michigan}

	^{Coronation O'Leary}^{b.1832 d.1871 Lexington, Missouri}

	^{Thomas J. O'Leary}^{b.1835 Milan, Ohio d.1903 Hutchinson, Kansas}		^{Jane Griffen}^{b.1797 Charleville, Ireland d.1886 Milan, Erie, Ohio}

	^{Christopher O'Leary}^{b.1839 Milan, Ohio d.1904 Charlotte, Michigan}

	^{Marcus O'Leary}^{b.1842 Milan, Ohio d. Enterprise, Ohio}