Porsche’s 75th anniversary extravaganza last northern summer included a frenzy of sports cars whizzing around its Stuttgart headquarters in front of an audience including heirs to co-founders Ferdinand Porsche and Anton Piëch.

But although the marque’s first car was produced in 1948, the company that made it was formed 17 years earlier and had a third co-founder, Adolf Rosenberger, who gave up his role and stake before fleeing Nazi Germany and remains largely absent from the famed brand’s corporate history.

Financial Times