Masseube is a commune in the Gers department in the Occitanie region in southwestern France. Masseube was originally the name of a farm b…Masseube is a commune in the Gers department in the Occitanie region in southwestern France. Masseube was originally the name of a farm belonging to Escaladieu Abbey, in Bigorre. In 1274, the Abbey and Bernard IV of Astarac founded a bastide in Masseube. It got its customary laws 2 years later. The bastide still has its streets at right angles, an old house which is now the Mairie, and timbered houses.