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Mary Hvorency 1899 - 1976

Mary Hvorency of Philadelphia, Philadelphia County, PA was born on March 20, 1899, and died at age 77 years old in June 1976.
Mary Hvorency
Philadelphia, Philadelphia County, PA 19140
March 20, 1899
June 1976
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Mary Hvorency's History: 1899 - 1976

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  • 03/20
    1899

    Birthday

    March 20, 1899
    Birthdate
    Unknown
    Birthplace
  • 06/dd
    1976

    Death

    June 1976
    Death date
    Unknown
    Cause of death
    Unknown
    Death location
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  • Did you know?
    Mary Hvorency lived exactly as long as the average family member when died at the age of 77.
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Did you know?
In 1899, in the year that Mary Hvorency was born, on February 14th, the first voting machines were approved by Congress for use in federal elections. Several states were already using voting machines in their elections and the Federal government was finally convinced of their safety and accuracy.
Did you know?
In 1905, by the time she was merely 6 years old, the German born physicist, Albert Einstein, proposed the Special Theory of Relativity: 1) that observers can never detect uniform motion except relative to other objects and that 2) unlike the velocity of massive objects, the speed of light is a constant and is the same for all observers independent of their constant velocity toward or away from the light source. Not such simple concepts that lead to the equation everyone now knows: E = mc2.
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Mary Hvorency's Family Tree & Friends

Mary Hvorency's Family Tree

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Friendships

Mary's Friends

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