Sanne Ledermann was born on 7 October 1928 in Berlin, Germany. She died on 19 November 1943 in Auschwitz-Birkenau Concentration Camp, Oswiecim, Malopolskie, Poland.
Sanne's sister, Barbara, was able to escape the Nazis through her contacts with the Dutch underground. Barbara emigrated to the United States and later married the Nobel prize winning biochemist Martin Rodbell.