In the 1939 census of Berlin Ernst and his brother Curt, both doctors of law, were listed at Sensburger Allee 23; no other obvious family members were listed at this address. Both brothers were deported from Berlin to Auschwitz concentration camp on 28/06/1943.

Possibly the widow of Toni geb. Landsberg who lived in Berlin and died 19/03/1937, and father of Steffi Mueller geb. Wachsner, born in Berlin on 08/05/1911, died in Indiana, USA on 29/01/2000. On the other hand, berlin.de says he remained unmarried.