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Description
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Mary A. Cowan: The Borgia of Maine

Early Life

Mary A. Cowan, born Mary A. Knight on March 8, 1863, in Plymouth, Maine, was one of several children to Jonathan F. Knights, a Civil War veteran, and Apphia B. Knights (née Sidelinger). She lived on a rural family home in Plymouth until the age of 20, when she married Willis W. Bean, a young farmer from nearby Dixmont.

Crimes

Mary Cowan's criminal activities spanned a decade, from 1884 to 1894. She poisoned two husbands and four children, earning her the moniker "The Borgia of Maine." Her crimes were characterized by their cold-blooded nature and the use of poison.

Victims

  • Gracie Bean (1884) - Smothered to death at the family home in Dixmont.
  • Alice Bean (1886) - Died from peculiar stomach aches.
  • Mabel Bean (1886) - Died from peculiar stomach aches.
  • Willis W. Bean (1888) - Died from stomach pain while in Ohio.
  • Unnamed step-son (1894) - Poisoned to death.
  • Unnamed step-son (1894) - Poisoned to death.
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Victims
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Confirmed Victims: (6)
  • Gracie Bean , Date of Death: 1884
  •     ...View 5 additional victims
    Links to Additional Sources (19)
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    Killer's Details

    Mary

    Cowan

    March 8, 1863 Plymouth, Maine, United States

    September 17, 1898 (aged 35) Thomaston, Maine, United States

    Undefined illness

    Female

    White

    The Borgia of Maine

    Murder (x1)

    Life imprisonment

    6 (1 conviction)

    1884 - 1894

    Maine, Ohio

    September 1894

    Maine State Prison

    07/03/2025