Joseph Droz was born in 1773.
Antoine Gustave Droz was born in 1832.
Daniela Droz was born on 1977-08-16.
Jules Humbert-Droz was born in 1891.
Jules Amez-Droz was born on 1921-06-30.
Joseph Droz died in 1850.
Antoine Gustave Droz died in 1895.
Jules Humbert-Droz died in 1971.
Hugo Valentin was born in 1888.
Hugo Grenzbach was born on December 11, 1900.
Joseph Droz has written: 'The art of being happy'
Hugo Pratt was born on June 15, 1927.