753 B.C.E. - Legendary claim that the twin brothers Romulus and Remus founded Rome.

1509 - Henry VIII of England: first day as king .

1836 - Sam Houston's Texas army defeated Antonio López de Santa Anna's Mexicans
          near the juncture of the Buffalo Bayou with the San Jacinto River.

1895 - New York: improving upon George Eastman's motion picture film invention,
         Woodville Latham demonstrated motion picture projection upon a screen.

1960 - The new city of Brasilia replaced Rio de Janeiro as the capital of Brazil.

1975 - South Vietnamese President Nguyen Van Thieu resigned.

1989 - More than 100,000 students gathered at Beijing's Tiananmen Square,
         observing Hu Yaobang's death and voicing their discontent with China's authoritative government.

1926 - Queen Elizabeth II (1952- ) was born.

1910 - Mark Twain (Samuel Clemens), American author and humorist, died.

1918 - Flying ace Manfred Albrecht Freiherr von Richthofen of the 80 victories,
        "The Red Baron, The Red Knight..." was permanently grounded.
         The commanding officer of 3 Australian Sqn, Major David Blake,
         organized a full military funeral on the following day.

I actually have a cousin that's 1460 days older than your dad (b. 13th Dec., 1951). Don't think another cousin was born in the 40 year generation span until 1958.