Robert Gilbert (born Robert David Winterfeld) (29 September 1899, Hamburg, Germany – 20 March 1978, Minusio, Switzerland) was a German composer of light music, lyricist, singer, and actor. His father was Max Winterfeld, a composer and conductor who went by the pen name of Jean Gilbert. His brother was Henry Winterfeld, an author of children's books.
http://en.wikipedia.org/wiki/Robert_Gi...
http://de.wikipedia.org/wiki/Robert_Gilbert