Octave Gengou died in 1957.
Octave Gengou was born in 1875.
Pertussis was discovered by Jules Bordet and Octave Gengou. The vaccine was created by Dr. Louis Sauer.
Jules Bordet (1870-1960) along with Octave Gengou discovered Bordetella pertussis in pure culture in 1906 as the actual cause of whooping cough.
The pathogen that causes whooping cough, Bordatella pertussis, was first isolated in 1906 by Bordet and Gengou. I don't know who was the first poor soul to have the cough drive them crazy, but I suspect that's not what you're asking.
Octave Chanute died in 1910.
Octave Gréard died in 1904.
Octave Merlier died in 1996.
Octave Dua died in 1952.
Octave Garnier died in 1912.
Octave Uzanne died in 1931.
Octave Crouzon died in 1938.
Octave Hamelin died in 1907.