Member of the Polish resistance during occupation of Poland in World War II.

In cooperation with Józef Walaszczyk, he was helping Jews living in the Warsaw ghetto, bringing them food, medicines and documents.

[2] He escaped from the transport to Pawiak prison after arrest, and left besieged Warsaw with the civilian population.

Those events served as the basis for the movie Umarłem, aby żyć (I died, so as to live, 1984).

[3] Miedza-Tomaszewski graduated from the Academy of Fine Arts in Warsaw when the war broke out.