According to the tenth-century Miracula sancti Martialis lemovicensis, Felix was "a noble and renowned patrician from the town of Toulouse, who had obtained authority over all the cities up to the Pyrenees and over the iniquitous people of the Wascones," that is, the Basques.
[3][4] Felix is probably the first ruler of the Duchy of Aquitaine that evolved from the old kingdom of Charibert II in the decades following his death (632) and Dagobert I's subjection of the Basques.
[5] Although he stands at the head of the list of semi-independent rulers of Aquitaine that extends through the Middle Ages, he is described as "mysterious"[5] and "obscure".
[8] Lupus is often considered a protégé of Felix, to whom the latter delegated Gascony, and who eventually succeeded him over all Aquitaine.
[4][3] On the other hand, he was an opponent to Ebroin, and so may have been an enemy of Felix who usurped authority in Gascony.