Following the German invasion of Poland in 1939, the Krempach family – the couple Jerzy and Irena and their three teenage children – were expelled from their home near Płock. They moved close to Warsaw and rented a farm. Soon enough, numerous Jews who had managed to escape Nazi persecution, gathered at their house.

They all worked at the farm and in the fields of the family in order to feed themselves and to create the impression that they were ordinary farm workers. The Jewish and Christian children went together to a clandestine school established by the Krempachs.

A number of the Jews received fake identity documents thanks to Jerzy’s connections in the Polish underground. All of the Jews who were kept hidden by the Krempach family managed to escape the horrors of the Shoah.

Several of the neighbors in close-by villages knew about the Jews who were hiding at the Krempach family’s two farms but what kept them from informing on them was, most probably, Jerzy and his excellent relations with the “silent partners” from the Polish Underground. Some of the members of the Krempach family helped the fighters of the Polish Underground by stealing weapons and grenades from a nearby German arms warehouse.

After the war, the Krempach family kept in touch with the Jews who had found shelter in their house during the war.

In April 1944, Yad Vashem awarded the title of Righteous Among the Nations to Jerzy and Irena Krempach.