Saint-Nicolas-de-la-Grave (; Languedocien: Sent Micolau de la Grava) is a commune in the Tarn-et-Garonne department in the Occitanie region in southern France. Antoine Laumet de La Mothe, sieur de Cadillac, the founder of the American city of Detroit was born here in 1658. See also Communes of the Tarn-et-Garonne department André Abbal References Communes of Tarn-et-Garonne