David Rittenhouse, b: 1782

^{1812 - 1814 War of 1812 with Britain}
^{1846 War w/Mexico,Calif & NM acquired}
^{1861 - 1865 Civil War, North vs. South}
^{1867 Alaska Territory purchased}
^{1869 Transcontinental Railroad complete}

^{1775 - 1783 Revolutionary War}
^{1776 Declaration of Independence}
^{1789 George Washington first president}
^{1803 Louisiana Territory Purchased}
^{1805 Lewis and Clark reach Pacific}

^{1720 Texas becomes Spanish possession}
^{1735 Freedom of press established}
^{1740 Colony population = 1.5 million}
^{1754 - 1763 Anglo-French War}
^{1773 Boston Tea Party tax rebellion}


			^{William Rittenhouse}^{b.1720 Delaware Twps, New Jersey d.1799}

		^{William Rittenhouse}^{b.1755, New Jersey d.1816}	^{Rebecca Harnett}^{b.1728 Of Woodbridge, New Jersey d.1780}

	^{David Rittenhouse}^{b.1782 of, New Jersey d.1860 Fayette, Pennsylvania}		^James Bray^{b. Monmouth, New Jersey d.1796 Kingwood, New Jersey}

		^{Rebecca Bray}^b.1759 d.	^{Catherine Winter}^{b. d.1776}

^{James Rittenhouse}^{b.1808 Fayette, Pennsylvania d.1874 Cadiz, Harrison, Ohio}

		^{Thomas Welles}^{b.1763 d.1825}

	^{Mary or Polly Welles}^{b. Fayette, Pennsylvania d.1850 Fayette, Pennsylvania}		^{Samuel Grable}^{b.1725 of Maryland d.1811 Fayette, Pennsylvania}

		^{Susannah Grable}^{b.1764 <, Frederick, Maryland> d.1845}	^{Hannah Earhart}^{b.1733 d.1804 Fayette, Pennsylvania}