David was born in 1919 in Bobruisk. Before the World War II he was a student at a physical-mathematical faculty. He died on 13 September 1942 in the Stalingrad battle. According to the information from the site in memory of the fallen in the World War II

http://www.obd-memorial.ru/Memorial/Memorial.html

he served as a "radist" (responsible for communications). As the address of the closest relatives of the perished (apparently his mother and father) the document gives town Bal'tzer of Saratov area, Leninskaya street 32. It is also indicated that he was recruited from the Bal'tzer area.