Where does “Basse-Terrien” come from?

Basse-Terrien (French) comes from French Basse-Terre, from French bas, from Old French bas, from Latin Bassus, from Ancient Greek βάσις, from Proto-Hellenic gʷə́tis, from Proto-Indo-European gʷémtis, from Proto-Indo-European gʷem- — to step.

Basse-Terrien (French): resident or native of Basse-Terre