Maria Armatys lived in Cracow. During World War II, she was engaged in helping the Jewish population. In her flat on Starowiślna Street, she sheltered Dr Julian Aleksandrowicz, together with his wife Maria and son Jerzy, for a long time. In addition, she gave her identity documents to a woman similar in age and appearance to Aleksandrowicz.  Marcjanna Zachacz, Anna Rawicz and Tadeusz Schmidt also received her help and care. The Aleksandrowicz family, thanks to the support of many people, among others, Andrzej and Wincentyna Stopka, the Adamski family from Wieliczka and Ludwik Żurowski, managed to survive the difficult period of occupation. After the war, Dr Julian Aleksandrowicz headed the Haematology Clinic at the Medical Academy in Cracow for many years.

The Yad Vashem Institute honored Maria Armatys’ heroic actions during the war by awarding her the title „Righteous Among the Nations” on April 18, 1982.