Mária Gerzsány (March 25, 1851 – December 30, 1928) was a serial killer in Austria-Hungary responsible for poisoning at least three people with arsenic in Kistelek between 1905 and 1911. She was sentenced to life imprisonment for these murders, but it is presumed that she may have been responsible for more, selling her poisons to people who wished to get rid of unwanted relatives.

Cleophus Emmanuel Cooksey Jr. (born March 25, 1982) is an American convicted spree killer and serial rapist who was found guilty in 2025 of killing eight people during a three-week killing spree in the Phoenix metropolitan area in late 2017.

Alfredo Stroessner Matiauda (Spanish: [alˈfɾeðo esˈtɾosneɾ]; 3 November 1912 – 16 August 2006) was a Paraguayan politician, army general, and military dictator who ruled as the 42nd president of Paraguay from 15 August 1954 until his overthrow in 1989. Known as El Stronato, his dictatorship was marked by political violence.