March 25, 1851 - Mária Gerzsány

Mária Gerzsány (March 25, 1851 – December 30, 1928) was a serial killer in Austria-Hungary responsible for poisoning at least three people with arsenic in Kistelek between 1905 and 1911. She was sentenced to life imprisonment for these murders, but it is presumed that she may have been responsible for more, selling her poisons to people who wished to get rid of unwanted relatives.

Content sourced from en.wikipedia.org/wiki/Mária Gerzsány under CC BY-SA 4.0.