- Incursion of suevos, alanos and vándalos in the year 409 via the Pyrenees passes and looting of the plains of Aquitaine and Novempopulania.
- Incursion of visigodos who managed to penetrate the Peninsula and later of various vicissitudes, they ended up becoming allies of the Roman Empire against the vándalos and alanos. In the year 418, however, the visigodos received the Second Aquitaine as a new home for their people and abandoned the Peninsula to constitute the Regnum Tholosanum on the other side of the Pyrenees.
The period of instability between 418 and 507 was marked by three phenomena which affected our area: suevo expansionism, bagaudic movement and interventions from the visigodos, which culminated in them finally settling in Hispania after being defeated by the Franks in the year 507.
The Franks gradually managed to control most of Galia and to build the Regnum Francorum, a powerful political reality which would maintain special relations with the other great kingdom located in the south of the Pyrenees.