Leon Gilbert Martin, b: 1918 -

^{1939 - 1945 World War II}
^{1945 Atomic bomb detonated (Hiroshima)}
^{1950 Korean War begins}
^{1964 - 1973 Vietnam War}
^{1969 Armstrong first person on the moon}

^{1903 Wright brothers 1st plane flight}
^{1908 Ford produces Model T}
^{1913 Edison invents movies w/sound}
^{1914 - 1918 World War I}
^{1929 The Great Depression begins}

^{1861 - 1865 Civil War, North vs. South}
^{1867 Alaska Territory purchased}
^{1869 Transcontinental Railroad complete}
^{1879 Edison invents phono/light bulb}
^{1898 Spanish-American War}


			^{Stewart Martin}^{b. d.}

		^{Henry Pryor Martin}^{b.1874 Marietta, OH d.1940 Minneapolis, MN}	^Sarah Pryor^{b. d.}

	^{Leon Gilbert Martin}^{b.1918 d.2000 Cedar Rapids, Iowa}		^{William Melanchthon Johnston}^{b.1855 Utica, Licking, Ohio d.1945 Minneapolis, MN}

^{Grady Martin}^{b. Private d.}		^{Emily Aurelia Johnston}^{b.1885 Minneapolis, MN d.1976 Ottumwa, Iowa}	^{Frances Victoria Laundrie}^{b.1864 Osseo, Minnesota d.1932 Minneapolis, MN}

^{Randolf Martin}^{b. Private d.}



	^Erma Miller^b.1920 d.