What is the birth date of the person who won his first Formula One victory at the 1968 British Grand Prix?
Jo Siffert Joseph Siffert (7 July 1936 – 24 October 1971) was a Swiss racing driver.
Peter Gethin Peter Kenneth Gethin (21 February 1940 in Ewell, Surrey, United Kingdom – 5 December 2011) was a British racing driver from England. He participated in 31 World Championship Formula One Grands Prix, debuting on 21 June 1970. He won the 1971 Italian Grand Prix in the fastest average speed in Formula One history, but this was his only podium finish. Gethin also participated in numerous non-Championship Formula One races, winning the 1971 World Championship Victory Race and the 1973 Race of Champions.