July 14, 1879 - Marie Alexandrine Becker

Marie Alexandrine Becker (née Petitjean; 14 July 1879 – 11 June 1942), nicknamed The Black Widow, was a Belgian serial killer who was sentenced to death for poisoning eleven people between 1933 and 1936, and attempting to poison five others. Since capital punishment in Belgium had not been applied since 1863, her sentence was commuted to life imprisonment.

Content sourced from en.wikipedia.org/wiki/Marie Alexandrine Becker under CC BY-SA 4.0.