[3] The Baïse forms the western border of the commune as it flows north to join the Gave de Pau at Abidos.

It is known that there was a beech grove at Aubertin (Faget d'Aubertii), in the middle of which Gaston IV of Béarn, called le Croisé (The Crusader), began building a hospital in the years 1115-1118.

The Albertine charter signed in 1128 resolved the dispute and allowed the development of the hospital which was opened shortly after a church, a cloister and a cemetery.

So, in 1160 Guillaume of Artiguelouve and one called Loup Bergunh sold the land and woods located on the right bank of the Bayse for grazing their herds to the priory of Sainte-Christine-du-Somport and the Aubertin hospital.

[16] Although the territory of the present village of Aubertin has long remained in the orbit of the lordship of Artiguelouve,[17] from the beginning most people seem to have attended the church of the Commandery.

When Arnaud Guilhem d'Artiguelouve married Anne d'Albret on 9 February 1534[21] he was called Lord of Artiguelouve, Aubertin, and Montardon and appeared to be at the height of his glory.

[24] On the other hand, the inhabitants of Aubertin had some autonomy in the management of their affairs as they were represented by a trustee and 5 aldermen from 1570 during some events of the Protestant Reformation.

It affirmed the identity of the village and marked the emergence of a new centre of power from an Artiguelouve lordship which disintegrated to a commandery which, after the Reformation, passed to the control of the Barnabites of Lescar.

They continued, however, to be only one parish until 1867 when the opening of a church in Aubertin and a new historical turning point: a village centre could finally develop around its bell tower, to which was added a cemetery, manse, town hall, and a school.