What is Margit Filó's real name?
Margit Filó's real name is Elek Margit Julianna.
Margit Julianna Elek (June 10, 1914 – April 9, 1979), known as The Rókus Black Widow, was a Hungarian serial killer who poisoned at least four people between 1958 and 1968. Ruled incompetent to stand trial, she was transferred to a mental hospital in Budapest, where she subsequently died.
Source: Wikipedia: Margit Filó
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