R. C. Duncan, b: -

^{1950 Korean War begins}
^{1964 - 1973 Vietnam War}
^{1969 Armstrong first person on moon}
^{1986 Nuclear disaster at Chernobyl}
^{1989 Berlin wall falls}

^{1912 Titanic sinks on maiden voyage}
^{1914 - 1918 World War I}
^{1922 USSR formed by Soviet states}
^{1939 - 1945 World War II}
^{1945 Atomic bomb detonated (Hiroshima)}

^{1869 Opening of Suez Canal}
^{1871 Franco - Prussian War}
^{1895 Marconi invents wireless telegraphy}
^{1899 Boer War begins}
^{1903 Wright brothers 1st plane flight}


			^{George Orcenith Duncan}^{b.1868 Linden, CA d.1933 Walnut Creek, CA}

		^{Curtis Hoppin Duncan}^{b.1905 Ft. Ethan Allen, VT d.1987 Riverside, Co., CA}	^{Lizzie Adelaide Waite}^{b.1877 Oakland, CA d.1959 Walnut Creek, CA}

	^{R. C. Duncan}^{b. d.}		^{Ernest Joy Frentress}^{b. d.}

		^{Helen Virginia Frentress}^{b.1911 Oakland, CA d.1974 Riverside, Co., CA}	^{Maud Ethel Kimball}^{b. d.}

^A. Duncan^{b. d.}



	^{K. Burroughs}^{b. d.}