Lady Mary Grosvenor was a British driver in the mid-20th century who could have been the first woman to race in Formula One.
Blessed with a huge family fortune as the youngest daughter of the Duke of Westminster, she was able to afford a series of increasingly powerful cars. Her father was, at the time, one of the richest men in the world.
She most often competed in hillclimbs and sprints, but did both circuit racing and rallying before and after World War II.
It was in rallies that she first came to prominence. She entered the 1936 RAC Rally in a Riley, starting from Buxton. She is recorded as having finished 156th in the 1938 event. She also rallied in Scotland early in her career.
She first appears on the circuit racing entry lists in 1937, as a member of the Lancs & Cheshire Car Club’s relay team for a race at Donington. Her team-mates were AC Molyneux (Lea Francis) and Hugh Cocker, who drove a Riley like Mary. They were fourth.
Her second major race was a Short Handicap at Crystal Palace in 1939, and she was second, in a Riley Sprite. This was the first of her racing cars; she favoured the Sprite in the early part of her career and owned several.
The same year, and in the same car, she was second in a two-lap Scratch Race at Donington, held by the Cambridge University Auto Club. She also entered a three-lap relay with Midge Wilby (Atalanta) and a T Winstanley in a Bentley, finishing second.
After the war, she raced a Riley and an Allard, which she used for hillclimbs and sprints, sometimes driving both cars in a single meeting.
She was third in a sportscar race at Gransden Lodge in 1946, in the Riley, and continued to compete strongly in hillclimbs until 1949, using a 1929 Bugatti T37A and an Alta as well as the Allard. The Bugatti was a particularly strong car for her and she set a ladies’ record at Prescott in 1947 that stood for more than 30 years.
The Alta, once it had been fitted with a 1500cc engine, would have been eligible for Formula One, but despite having the means, Lady Mary declined to pursue this. She preferred to use the car in speed events. Throughout her motorsport career, Lady Mary was always very independent, choosing her own path. She does not appear to have competed outside the UK, although she travelled extensively in Europe and Africa, and was never part of any of the women-only rallies that took place on the continent.
She had bought her first Alta, a 69IS in 1939 but never got the chance to race it and sold it after the war. Later, she ran a different Alta in both 1500cc and 2000cc guises. As a 1500cc Grand Prix car, it took her to sixth place in class in a hillclimb at Prescott in 1949. That summer, she used the Alta at another Prescott climb, at Shelsley Walsh and the Chester Motor Club’s sprint, where she was second in class.
Later, she raced a Frazer Nash Le Mans Replica at Silverstone and Goodwood, finishing third in a handicap at Goodwood in 1951.
She retired from motorsport in 1953, after the death of her father, the Duke of Westminster, and devoted her time to running the family estates. Only once did she come out of retirement, in 1955, when she entered a Bentley Drivers’ Club event at Oulton Park driving a Triumph TR2.
The Westminster title could only pass to a male heir, so neither Mary nor her sister Ursula could inherit. It passed to Mary’s second cousin William. Mary herself never married, although she was suggested as a potential bride for The Prince of Wales, later briefly Edward VIII, as a young woman.
She died in 2000, aged 89.
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