Saint Michał Piaszczyński
Feast day: June 12
1885 – 1940
Michael Piaszczynski was a Polish Catholic priest who was arrested by the Nazis and killed at Sachsenhausen concentration camp. As a martyr he was beatified by Pope John Paul II on 13 June 1999.
Text from Wikipedia (Michał Piaszczyński), CC BY-SA 4.0