2. Jeanne Weber
In March of 1905, Jeanna Weber strangled four children to death, including her son and two nieces. After these incidents, she was caught in the act of strangling her 10-year-old nephew, after which she was tried but acquitted. This lead her to take up babysitting, which ended in another two deaths. She was eventually declared clinically insane and lived in an asylum for two years before she committed suicide by hanging.