In 1897, Amy got married to James Archer. At the end of that year she gave birth to her first child named Mary J. Archer. They were bonded into this married life for about a decade and this married life ended in 1910 as James Archer died of Kidney disease.
Amy lived a single life for about three years and then she tied her married knot for the second time in her life with Michael W. Gilligan. They got married in 2013. Michael W. Gilligan was a widower and he was a wealthy man. He died on 20th of February 1914. Amy's nationality was American and she was of white ethnicity.
With the turn of 1900s, The Archers got their first job and that was caretakers. From 1901, they began taking care of an elderly widower, John Seymour. They took care of him for about three years and he died in 1904. This home was turned into a boarding house for the elderly by his heirs and the Archers took the responsibility of this house. In 1907, they got shifted to Windsor, Connecticut and they began running their own business under the name Archer Home for the Elderly and Infirm. From 1907 to 1917, 60 deaths happened in the Archer Home. With the death of a healthy man Franklin R. Andrews, suspicions grew against her in the local level. After a year of investigation, she was arrested and charged for murder. She killed most of her patient using arsenic. A book titled The Devil's Rooming House was published related to her murder and arsenic. In 1924, she was declared insane and she was sentenced to life imprisonment. She died at the age of 93. Her bio is well accessible in Wikipedia. Her net worth is unknown.