Flowers everywhere, a lovely gazebo, a fountain on the Place de l'Eglise: Arengosse you smiled. Come discover this multifaceted. This is probably a topographic name aran (valley) which runs the Bez associated suffix Aquitanie - ossa, which has a meaning here simply renting (where it is?). So it is a toponym dating back before the Roman conquest. In the Middle Ages, there was near a church dedicated to since disappeared, "Sancta Maria de Besauduno", overlooking the small valley Bez Bézaudun. This name seems to have formed the basis of pre-Latin bes / besal probably hydronymic, associated with Gallic dunum, "fortress". It was a lordship of which mention is made in 1202. In the 13th century, a village community, subject to the privileges and customs of Brassenx, it was established.
The site Arengosse seems to have formerly been very busy, thanks to a favorable position in the human habitat, as evidenced by the discovery of numerous objects, flint, chipped stone axes, copper, bronze ring dating of prehistory, and vases, plates, urns, jars Gallo-Roman, exposed in the Park of Seven Waters, in the village center. Some localities, "Tuc Mouréou of" the "Motte old" kind of moated mounds, reminiscent of a past defensive.
In the late Middle Ages the lords of Baffoigne did build the magnificent castle of Castillon, due to the architecture of Gratian Lerm. The building had to suffer the troubles of the Fronde (looting), wars of religion (destruction by the troops of Balthazar in 1635) taken by the Chevalier d'Aubeterre in 1653. Ownership of Poudenx it passed into the hands of Baron Pierre d'Ismert Empire in 1813. According to legend, the descendants ruined it received Theophile Gautier, their parents, who took the example of the decrepit building, "Castle of misery" in his novel "The Captain Fracasso.
The village is turned into rural life and the forest. Livestock are known a time of prosperity, many flocks of sheep occupied the installed on the moor. A school's learning sheep farming was even created in 1932 on the farm of Barsacq. There is also operated clay (tile, pottery).
