Belle Gunness was an infamous serial killer who terrorized the Midwest in the late 19th and early 20th centuries. Born in Norway in 1859, she immigrated to the United States in 1881 and eventually settled in La Porte, Indiana.
From Wikipedia
Belle Gunness, nicknamed Hell's Belle, was a Norwegian-American serial killer who was active in Illinois and Indiana between 1884 and 1908. Gunness is thought to have killed at least fourteen people, while some sources speculate her involvement in as many as forty murders, making her one of the most prolific female serial killers in history. Gunness seemingly died in a fire in 1908, although her actual fate is unconfirmed.