The ones that interest me most are:
Nannie Doss AKA The Giggling Granny.
Nannie Doss (born November 4, 1905 – June 2, 1965) was a serial killer responsible for the deaths of eleven people between the 1920s and 1954. She finally confessed to the murders in October 1954, when her fifth husband had died in a small hospital in Tulsa, Oklahoma. In all, it was revealed that she had killed four husbands, two children, her two sisters, her mother, a grandson and a nephew. She has been given the monikers "The Giggling Nanny", "The Giggling Granny" and "The Jolly Black Widow".
Born in 1859, her she was responsible for the killings of more than 20 suitors and all of her children. Bell was famous for burning down homes and collecting the insurance money for the properties and her dead husbands. She then placed advertisements in the newspaper, luring prospective suitors to her home and then killing them by poison. She buried the bodies on her farm and in the hog pen. Her whereabouts today is still unknown. Picture of Bell and her children.