Ida Jauch lived in the Dreieinigkeit allotment gardens in Berlin-Lichtenberg, where she ran a small textiles business. She knew Anna Rosenthal, the “Aryan” grandmother of Hans Rosenthal, who was persecuted as a Jew. In March 1943, 18-year-old Hans turned to his grandmother—his parents had died and his younger brother Gert had been deported—because he had to go underground so to evade his own deportation. Since he could not stay with her, Anna Rosenthal passed him on to her friend Ida Jauch.
Jauch took Rosenthal in and hid him in a tiny space inside her garden house. A devout Christian, she shared her sparse food rations with him. Anna Rosenthal was also able to bring food now and then. Hans Rosenthal could only leave his hiding place at night, during air-raid alarms. In September 1944 Ida Jauch died very suddenly. Hans Rosenthal asked Maria Schönebeck, a neighbor in the gardens, for help, and she took him in. He was liberated by the Red Army in her garden house at the end of April 1945.
Ida Jauch was posthumously honored by the Israeli Holocaust Memorial Center Yad Vashem as Righteous Among the Nations in 2011.