Polish writer, a catholic activist and a World War II resistance fighter, co-founder the wartime Polish organization Żegota, set up to assist Poland's Jews in escaping the Holocaust. In 1943, she was arrested by the Germans and sent to Auschwitz Concentration Camp.She was released through the efforts of the Polish underground and returned to Warsaw. In late 1944, she participated in the Warsaw Uprising. After the war she moved to Western Europe, but returned to Poland in 1957 where she remained until her death in 1968 at the age of seventy-eight. In 2009, the National Bank of Poland issued a coin posthumously commemorating the work of Kossak, Irena Sendler and Matylda Getter in helping Jews escape from from the Nazis during World War II.
Maiden name: Kossak
After her first marriage: Kossak-Szczucka
After her second marriage: Kossak-Szatkowska
Her cousins were Maria Pawlikowska-Jasnorzewska and Magdalena Samozwaniec.