January 1, 1935 - Florencio Fernández

Florencio Roque Fernández (1935 – 1968) was an Argentine serial killer who murdered around 15 women in his hometown of Monteros, Tucuman Province in the 1950s. He was popularly known as The Argentine Vampire and The Window Vampire, referencing his mode of operation.

Content sourced from en.wikipedia.org/wiki/Florencio Fernández under CC BY-SA 4.0.