- His father was a Jewish salesman, who died in a concentration camp during World War II.
- Father of David Haubenstock from his marriage to Romy Schneider.
- German dubbing voice of Robert Mitchum, Dirk Bogarde, Peter Sellers, Michel Piccoli and Jean-Louis Trintignant. Piccoli and Trintignant starred with his wife Romy Schneider in several movies.
- On Easter Sunday 1979, he was found dead by his girlfriend, actress Anita Lochner. He had hanged himself on the fire escape of his house in Hamburg-Harvestehude.
- Is interred in the Ohlsdorf Cemtery, Hamburg.
- Made his stage debut at the Thalia Theater in Hamburg (1945).
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