Cycling: who holds the record for most stage wins in a single edition of the Tour de France?

The record is 8 stage wins in a single edition of the Tour, achieved four times by by three riders. The first was Charles Pélissier of France who did it in 1930 (he also had seven 2nd and three 3rd places). The next was the legendary Eddy Merckx of Belgium who did it in both 1970 and 1974. Another Belgian, Freddy Maertens did it in 1976 (in addition to four 2nd and two 3rd places).

https://en.wikipedia.org/wiki/Tour_de_France_records_and_statistics