Sauveterre-de-Guyenne is a commune in the Gironde department in Nouvelle-Aquitaine in southwestern France. Before 1896, Sauveterr…Sauveterre-de-Guyenne is a commune in the Gironde department in Nouvelle-Aquitaine in southwestern France. Before 1896, Sauveterre-de-Guyenne was better known as Sauveterre-de Bazadais. This Bastide was built in a small village called "Athala" and was first named Salva-Terra, which later became Saubeterre and then Sauveterre.