The person Erika Rosenberg wrote a biography of was married to whom?
Erika Rosenberg Erika Rosenberg (born 24 June 1951 in Buenos Aires, Argentina) is an author, interpreter and journalist. She wrote a biography of Emilie Schindler.
Ralph Siegel Ralph Siegel (born 30 September 1945 in Munich) is a German record producer and songwriter. He is married to the opera singer Kriemhild Jahn. He has three daughters, one of them Giulia Siegel divorced from German entrepreneur Hans Wehrmann.