Jean-Marie Musy became Swiss Federal Councillor in 1919, and was elected twice President of Switzerland (1925-30). From 1919 to 1932, he devoted all of his strength to the arduous task as the head of the Finance and Customs Department.
Jean-Marie Musy's eldest son, the brigadier colonel (General) Pierre Musy, was an
outstanding horseman and, on two occasions, he won the "Cup of Nations" in Hanover. He also added to his list of successes the "gold medal" at the Winter Olympic
Games of 1936.
The second son of Jean-Marie Musy, Benoît Musy won six Swiss and International championships racing Moto Guzzi motorcyles at the beginning of the 1950's. In 1953 Benoît Musy moved to racing automobiles with Maserati cars, and he won numerous international titles.