January 31, 1911 - Władysław Mazurkiewicz

Władysław Mazurkiewicz (31 January 1911 – 29 January 1957) was a Polish serial killer from the post–World War II Kraków. He also owned property in Warsaw.

Mazurkiewicz was arrested in 1955 and charged by the prosecution with six murders and two more attempted murders. He was convicted of killing four men and two women: Wiktor Zarzecki, Władysław Brylski, Józef Tomaszewski, and millionaire Jerzy de Laveaux along with his wife Jadwiga de Laveaux and her sister, Zofia Suchowa. He was tried by the regional court in Kraków and sentenced to death on 30 August 1956. He was executed by hanging five months later on 29 January 1957, two days before his 46th birthday. According to various rumours, Mazurkiewicz might have been responsible for as many as 30 murders, which were never confirmed.

Content sourced from en.wikipedia.org/wiki/Władysław Mazurkiewicz (serial killer) under CC BY-SA 4.0.