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.
Lance Macklin Lance Noel Macklin (2 September 1919 – 29 August 2002) was a British racing driver from England. He participated in 15 Formula One World Championship Grands Prix, debuting on 18 May 1952.