Marga Mannheimer was the mother of Lane (Laura) Mannheimer who is also recorded in this Memorial Book. She grew up with two younger siblings when her parents, Isidore and Lina Mannheimer (née Lily Stein), in Bad Wildungen. Before Marga Mannheimer came to Neu-Isenburg, she had worked a few months as a domestic help in Kirchhain (Marburg-Biedenkopf) and later lived in Berlin. For whatever reasons she her stay in Oppenheim, was not known.

Marga was 17 years old when, in August 1938, she got pregnant in the Neu-Isenburg Home of the Jewish Women's Association. At the end of September, she gave birth to her daughter Lane Laura at the Israelitisches Krankenhaus Frankfurt in Gagernstraße 36. For two and a half months, Marga Mannheimer supervised her daughter in the institution, before leaving home in the middle of December 1938 alone. She was deported to her home town of Bad Wildungen, but at least temporarily resided in Treysa. In February 1941, she was reported in Frankfurt am Main.

Shortly before her 20th birthday, on March 4, 1941, Marga Mannheimer was sent to Berlin for forced labor. She was employed there as a machine worker at Siemens-Schuckertwerke AG.

On October 19, 1942, Marga Mannheimer was deported from Berlin to the Riga ghetto. In the same transport was also her daughter. Lane Mannheimer had been transferred to an orphanage in the wake of the closure of „Heim Isenburg“ in Berlin. The displaced, among them 140 children up to the age of 10 years, arrived on 22 October 22, 1942, at the station Šķirotava near Riga. There, 81 men with craft trades were selected and assigned different work commissions. The others were driven into the surrounding forests immediately after their arrival, and were murdered there at excavated mines (Gottwaldt / Schulle, p. 258). Among them were 21-year-old Marga and four-year-old Lane Mannheimer.

Marga's parents and their younger siblings, Erika and Herbert, who lived in Kassel, were also abducted to the Riga ghetto a few weeks later, on December 8, 1942. They remained together for some time under horrible living conditions, until on February 16, 1942, the 54-year-old Isidor Mannheimer was dispatched to the Salapils camp near Riga, where the men had to carry out heavy construction work in the icy cold. When the 54-year-old Isidor Mannheimer was no longer able to cope with the hardships, he was murdered on March 26, 1942, during a shooting operation in the Bikernieker Forest. Marga's younger brother Herbert, born on August 12, 1927 in Bad Wildungen, was probably taken to the KZ-Riga-Kaiserwald when the Riga ghetto was dissolved, where he died in the same year - just 16 years old. Only Lina and Erika Mannheimer survived. They were separated during the liquidation of the Riga ghetto but met after an odyssey through various camps probably in 1944 at Stutthof concentration camp again. From there they were sent to the west on the death march, but finally freed on January 26, 1945 in the Polish Koronovo (Crown). Lina and Erika Mannheimer emigrated 1946 to the USA.

The article was supplemented by Richard Oppenheimer.: