Question: Whose death during the 1973 Dutch Grand Prix at Zandvoort Circuit in the Netherlands is the subject of a book by David Tremayne?

Context paragraphs:
1973 Dutch Grand Prix: The 1973 Dutch Grand Prix was a Formula One motor race held at Zandvoort on July 29, 1973.  It was race 10 of 15 in both the 1973 World Championship of Drivers and the 1973 International Cup for Formula One Manufacturers.  Zandvoort returned to the Formula One calendar following a year's absence for extensive safety upgrades to the race track including new asphalt, new barriers and a new race control tower.  Jackie Stewart won the race, this Grand Prix being fourth of five wins for Stewart during the 1973 Formula One season, and he became the most successful Formula One driver of all time with his 26th Grand Prix victory, surpassing Jim Clark's record of 25 victories.

2006–07 A1 Grand Prix of Nations, Netherlands: The 2006–07 A1 Grand Prix of Nations, Netherlands was an A1 Grand Prix race, held on October 1, 2006 at the Circuit Park Zandvoort circuit in Zandvoort, Netherlands.  This was the first race in the 2006-07 A1 Grand Prix season.

1985 Dutch Grand Prix: The 1985 Dutch Grand Prix was a Formula One motor race held at Circuit Zandvoort on 25 August 1985.  It was the eleventh round of the 1985 FIA Formula One World Championship.  The race was held over 70 laps of the four kilometre circuit for a race distance of 298 kilometres.  The race also proved to be the 34th and last Dutch Grand Prix and the 25th and last Grand Prix victory for triple World Champion Niki Lauda, driving a McLaren-TAG.  Lauda's team-mate Alain Prost was second, with Brazilian racer Ayrton Senna third in his Lotus-Renault.

1980 Dutch Grand Prix: The 1980 Dutch Grand Prix was a Formula One motor race held on 31 August 1980 at the Circuit Zandvoort in the Netherlands.  It was the eleventh race of the 1980 Formula One season.  The race was the 29th Dutch Grand Prix.  The race was held over 72 laps of the 4.252-kilometre circuit for a total race distance of 306 kilometres.

1962 Dutch Grand Prix: The 1962 Dutch Grand Prix was the eleventh time the Dutch Grand Prix (or Grote Prijs van Nederland) motor race was held.  The race also held the honorary designation of the 22nd European Grand Prix.  It was run to Formula One regulations on 20 May 1962 as race 1 of 9 in both the 1962 World Championship of Drivers and the 1962 International Cup for Formula One Manufacturers.  It was held over 80 laps of the compact 2.6 mile Circuit Park Zandvoort for a race distance of just over 200 miles.

1950 Dutch Grand Prix: The 1950 Dutch Grand Prix was a motor race held on 23 July 1950 at Circuit Park Zandvoort, Netherlands.  It was the first Dutch Grand Prix set to Formula One rules.  The race was won by French driver Louis Rosier in a Talbot-Lago.

Roger Williamson: Roger Williamson (2 February 1948 – 29 July 1973) was a British racing driver who died during the 1973 Dutch Grand Prix at Zandvoort Circuit in the Netherlands.

The Lost Generation (book): The Lost Generation: The Brilliant but Tragic Lives of Rising British F1 Stars Roger Williamson, Tony Brise and Tom Pryce (ISBN  ) is a book written by David Tremayne.  The book is biography of three British Formula One drivers: Tony Brise, Tom Pryce and Roger Williamson, who all died after a short period in Formula One.

1951 Dutch Grand Prix: The 1951 Dutch Grand Prix was a motor race held on 22 July 1951 at Circuit Park Zandvoort, Netherlands.  It was the second Dutch Grand Prix set to Formula One rules.  The race was won for the second year in a row by French driver Louis Rosier in a Talbot-Lago.

Dutch Grand Prix: The Dutch Grand Prix (Dutch: "Grote Prijs van Nederland" ) was a Formula One automobile race held at Circuit Zandvoort, near Zandvoort, the Netherlands, from 1948 to 1985.  It was a part of the World Championship from 1952, and designated the European Grand Prix twice, 1962 and 1976, when this title was an honorary designation given each year to one grand prix race in Europe.

Supporting paragraphs: The Lost Generation (book) Roger Williamson
Answer: Roger Williamson