Otto Rosenberg was born in East Prussia in 1927 and grew up in Berlin. He was 9 when he was sent to the Roma and Sinti camp in Marzahn, ahead of the 1936 Olympic Games, and 16 when he was sent to Auschwitz. He was then detained in Buchenwald and Bergen-Belsen concentration camps before being freed in 1945. In later years, Rosenberg was the chairman of the Regional Association of German Sinti and Romanies Berlin-Brandenburg and fathered seven children. He passed away in 2001.
