Sibusiso Derrick Duma (born 6 May 1984) is a South African serial killer who was convicted of two murders in 2007 and five murders in 2009 and sentenced to 8 life sentences in prison. He was mostly active around the City of Pietermaritzburg, KwaZulu Natal.

Raymond Martinez Fernandez (December 17, 1914 – March 8, 1951) and Martha Jule Beck (May 6, 1920 – March 8, 1951) were an American serial killer couple. They were convicted of one murder, are known to have committed two more, and were suspected of having killed up to twenty victims during a spree between 1947 and 1949.

Werner Boost (né Korecki; born 6 May 1928), nicknamed The Couples Killer, is a suspected German serial killer who allegedly committed double murders on couples in the 1950s. However, only one could be definitely proven - the murder of lawyer Bernd Servé in January 1953.

David Joseph Carpenter (born May 6, 1930), also called the Trailside Killer, is an American serial killer and sex offender who raped, tortured, and murdered various victims in the San Francisco Bay Area between 1979 and 1981. He was sentenced to death for seven murders and is believed to be responsible for several more.

Maximilien François Marie Isidore de Robespierre (; French: [maksimiljɛ̃ ʁɔbɛspjɛʁ]; 6 May 1758 – 28 July 1794) was a French lawyer and statesman, widely recognised as one of the most influential figures of the French Revolution. Robespierre fervently campaigned for the voting rights of all men and their unimpeded admission to the National Guard.