Born in Paris to Swiss Baron Leo de Graffenried and American mother Irma Stern, de Graffenried began his racing career in 1936. During the mid-1930s, he competed in pre-war Grand Prix and sports car events, including the Mille Miglia and the German Grand Prix. He frequently drove his own Maserati voiturette or an Alfa Romeo 6C 1750. He established a reputation for capability at the Bremgarten circuit near Bern, a dangerous track characterized by its cobbled surface and tree-lined layout.
After resuming racing in 1947, de Graffenried achieved significant success in 1949. He secured podium finishes at San Remo and Pau before recording his greatest career victory at the 1949 British Grand Prix at Silverstone. Driving a Maserati 4CLT, he defeated Bob Gerard and Louis Rosier in a race held one year before the official World Championship was established.
De Graffenried debuted in the inaugural World Championship race, the 1950 British Grand Prix. That season, he drove a Maserati 4CLT/48 for Enrico Plate, recording two sixth-place finishes at Bremgarten and Monza. In 1951, he scored his first championship point by finishing fifth at the Swiss Grand Prix while driving an Alfa Romeo 159.
His most successful championship season came in 1953, when he finished eighth (or seventh, according to conflicting sources) in the standings. Driving a Maserati A6GCM, he scored points in three races, including a career-best fourth place at the Belgian Grand Prix and fifth-place finishes at Zandvoort and the Nurburgring. His final World Championship start occurred at the 1956 Italian Grand Prix, where he finished seventh for Scuderia Centro Sud.
Outside of the World Championship, de Graffenried won two Formula Libre races in Brazil in 1954, taking victory at both Rio de Janeiro and Sao Paulo in a Maserati A6GCS. He also finished second at a 1952 Silverstone sports car race in a Jaguar XK120 and third at the 1955 Venezuela Grand Prix in a Ferrari 750 Monza.
Following his retirement at the end of 1956, he managed a car dealership in Lausanne representing Alfa Romeo, Rolls-Royce, and Ferrari. During the 1970s and 1980s, he served as a corporate ambassador for Marlboro. He also worked as a stunt double for Kirk Douglas in the 1955 film The Racers. In 1998, at age 84, he returned to the wheel at Silverstone to celebrate the 50th anniversary of the circuit and his 1949 victory.
This article is based solely on the supplied corpus. No external sources were consulted; claims that could not be substantiated against the corpus were omitted under the drop-the-claim rule.
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