This search comes from a well-known geograph, Fernand Maurette, who has become an international official at the ILO. She continued with the discovery of his wife Marie-Thérèse, Director of the Geneva International School from 1929 to 1949, which is the red thread of our work. It opens in four different directions: the normalian environment and geography; from reformative socialism to communism; internationalisms and international organisations; the issue of gender. The study of the trajectories of the members of this family clan (the Maurette, the Vigier and Paul Dude) is part of the social and family history of internationalist circles from the beginning of the twentieth century to the late 1960s. On the basis of these trajectories, it is possible to highlight the pivotal moments of a certain degree of French internationalism, at the juncture of several international experiences in fields such as science, education, politics and international organisations.