About Roger Williamson
Roger Williamson was a British racing driver and a two time British Formula 3 champion, who died during his second Formula One race, the 1973 Dutch Grand Prix at Zandvoort Circuit in the Netherlands. He won the 1971 and 1972 British Formula 3 Championship titles. Purley later stated he could hear Williamson's screams from underneath the car, but by the time the first fire engine arrived and the fire was extinguished, Williamson had died of asphyxiation. Purley was later awarded the George Medal for attempting to rescue Williamson.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.