Baumann’s father had a Jewish ancestry. Baumann is indeed a common Jewish name. His mother was gentile. In any case, Heinz was not technically a Jew.
Baumann was born on September 14, 1928, in Berlin. He was born in a family connected to show business and animals, albeit not to the circus: Charly’s father was a movie stuntman, who worked with horses for UFA in Berlin, then Germany’s major movie studio. As a child, Charly appeared in a dozen German films. During the second world war, his parents were thrown into concentration camps after Baumann's father had helped a wealthy Jewish family flee to Spain. His father died in a gas chamber, but his mother was allowed back to Berlin, while their son was held in an orphanage and later worked on an eastern German farm. Charly escaped this brutal regime, only to be drafted into the navy and captured by the Americans weeks before the end of the war.