Tesson is a commune in the Charente-Maritime department in southwestern France. According to a widespread theory, that name, …Tesson is a commune in the Charente-Maritime department in southwestern France. According to a widespread theory, that name, which is not unique to this particular commune, is a distortion, in the medieval period, from the Late Latin taxo, ionis, itself of Celtic origin, meaning “the badger”. In Old French, it became Taisson. The first settlements were allegedly built in a place where badgers used to dig their burrows.