Helmut L. was one year old in 1941 when he found accommodation together with his older sisters Wilma and Zerline for a few weeks in the Home of the Jewish Women's Association. His father, Conrad L. was not a Jew while the mother, Martha L. was Jewish. Martha was the aunt of Helga Löwenberg who also lived at the Home of the Jewish Women's Association in Neu-Isenburg from December 1939 to March 1942. Martha and Konrad L. had another son and two older daughters.

Conrad L. was a dedicated communist. He was therefore politically persecuted repeatedly arrested and imprisoned in various camps after the Nazis' took over power. Among other things, he was held in "protective custody" in the Natzweiler concentration camp in 1941 and the Buchenwald concentration camp in 1943. His family was expelled from their home during the Nazi period and were later sent to a shanty town in Biebrich where racially persecuted families; mainly Jews, Sinti, and Roma were cramped together. During the Second World War, the children were in the care of several homes.

The mother died on January 29, 1943, in the Auschwitz concentration and extermination camp while the father died in 1944 in the Mittelbau-Dora satellite camp of the Buchenwald concentration camp. The six children of the couple survived the Nazi period in care homes. In April 1946, they immigrated to Palestine. They were educated and trained in Youth Aliyah institutions.

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