Mary Clement, Date of Birth, Date of Death
TweetMary Clement
Luxembourg-born American serial killer
Date of Birth: 
About Mary Clement
- Marie "Mary" Clement (born February 16, 1863 in Harlange, Luxembourg - July 9, 1944 in the United States), also known under several aliases, was a Luxembourgish-born American serial killer who poisoned her parents and two of her sisters at their home in Dubuque, Iowa.
- Although never charged in their deaths, she was later convicted of attempting to poison her sister's family in Rose Hill, Illinois and sentenced to a year in the Joliet Prison.
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