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.
Keith Holland Keith Holland (born 6 December 1935) is a British former racing driver from England who competed in various classes of racing in the 1960s and '70s. He is known for winning the 1969 Madrid Grand Prix in a Formula 5000 car in a field which contained several Formula One entries. He was also a regular competitor in the British Formula 5000 Championship finishing third in the title standings on two occasions.