Wieman was born in Osnabrück, the only son of Carl Philipp Anton Wieman and his wife Louise. Raised in Osnabrück,Wiesbaden and Berlin, where he studied four terms of philosophy, history of art and languages, Wieman wanted to actually become an airplane technical designer and flier. He started his acting career on the stage in Berlin under the direction of Max Reinhardt at the Deutsches Theater. In the early 1920s, he was a member of the Holtorf-Truppe, a stock theater group that included future director Veit Harlan. His fellow stage actors included his future wife, Erika Meingast, Marlene Dietrich, Dora Gerson and Max Schreck (the vampire in Nosferatu). Later he began working in silent and sound films; he landed supporting roles in Femme, Königin Luise and Das Land ohne Frauen. In 1930, along with Leni Riefenstahl, he appeared in Avalanche (Stürme über dem Mont Blanc), and in 1932 he played the lead in Riefenstahl's Das Blaue Licht.
[source from Wikipedia]