The quick answer is she poisoned so many people using arsenic including her husbands and children. She was hanged for her crimes.
Mary Ann Cotton poisoned her victims.
Mary Ann Cotton was hanged at Durham County Gaol on 24 March, 1873.
Mary Ann Cotton (October 1832 - 24 March 1873) was an English serial killer believed to have murdered up to 20 people, mainly by arsenic poisoning.
I believe that Mary Ann Mantel discovered the first dinosaur skeleton/fossil in England in the 1800's.
I believe that Mary Ann Mantel discovered the first dinosaur skeleton/fossil in England in the 1800's.
Mary Ann Niles died on October 3, 1987, in New York City, New York, USA of lung cancer.
Mary Ann Cotton (October 1832 - 24 March 1873) was an English serial killer believed to have murdered up to 20 people, mainly by arsenic poisoning.
Ann Cotton was born in 1950.
St. Anne was the mother of the Blessed Virgin Mary.
jack the ripper Mary ann cotton William palmer Amelia dyer Burke and Hare
Mary Ann Saxon's birth name is Mary Ann Murphy.
Mary Ann Nichols's birth name is Mary Ann Walker.