Once there, he first tried to become a priest, and later he joined a military regiment composed of foreigners, as a cadet.
Soon after he abandoned that career too, in order to try to become rich by renting a parcel of land and dedicating himself to agriculture.
He also dabbled as an inventor, and developed an impracticable scheme to supply water to Santiago.
The ship that was carrying them, the San Pedro de Alcantara, went down in front of the coasts of Portugal during a storm.
Gramusset survived the sinking but died three months later due to the exposure suffered.