Robert Harry Clark 12th, b: 1854

^{1908 Ford produces Model T}
^{1913 Edison invents movies w/sound}
^{1914 - 1918 World War I}
^{1929 The Great Depression begins}
^{1939 - 1945 World War II}

^{1867 Alaska Territory purchased}
^{1869 Transcontinental Railroad complete}
^{1879 Edison invents phono/light bulb}
^{1898 Spanish-American War}
^{1903 Wright brothers 1st plane flight}

^{1803 Louisiana Territory Purchased}
^{1805 Lewis and Clark reach Pacific}
^{1812 - 1814 War of 1812 with Britain}
^{1846 War w/Mexico,Calif & NM acquired}
^{1861 - 1865 Civil War, North vs. South}




	^{Robert Harry Clark 12th}^{b.1854 San Rafael, CA d.1929 Bartlesville, OK [Washington Co?]}

^{Merle Christina Clark}^{b. d.}

^{Nellie Kirkman Clark}^{b. d.}			^{George Kirkman}^{b.1795 Guilford C, North Carolina d.1847 Centerville, Indiana}

^{Robert Harry Clark 13th}^{b.1897 Beaver Co, OK d.1973}		^{Jonathan Mar Kirkman}^{b.1834 Highpoint, NC d.1866 Wayne Co, IN}	^{Patience Chappel}^{b.1807 NC d.1887 IN}

	^{Alza Kirkman}^{b.1860 Wayne Co, IN d.1948 Seward Co, KS}		^{Walter Thornburg}^{b.1807 VA d.1874 IN}

		^{Tamar Thornburg}^{b.1837 Hamilton Co, IN d.1926 Howard Co, IN}	^{Rebecca Comer}^{b.1807 Cane Creek, SC d.1855 Wayne Co, IN}