Travel to the Pyrenees. To reach Zaragoza, King Charles had to cross both Aquitaine and Vasconia. For this reason, still alive in the embers of affront and abuse, it is necessary to take appropriate precautions. We do not know what they were, but Ludovico P's biographer records it in his chronicle: Transitiit Garonnam fluvium, Aquitanorum et Wasconum conterminum: quam regionem iamdudum in deditionem susceperat. Lupo principe se et sua eius natui dedente. Idibem etiam quae opportunitas utilitasque dictavit explicit, statui Pyrinaei montis superat difficultate ad Hispaniam pergere... (El Astr nomo). He passed to the other side of the Garonne, a river that runs on the border Aquitanians and Vascones, a region that had previously been submitted to him, Prince Lupo having put his person and his property at his disposal. There he also brought to an end what opportunity and convenience dictated. He decided to move to Hispania, overcoming the obstacle of the Pyrenees. The Annales Regii, almost contemporary, say: DCCLXXVIII. Tunc domnus Carolus rex iter peragens Hispaniae per duas vias: unam per Pampilonam, per cuam ipse supradictus magnus rex perrexit usque Caesaraugustam. Ibique venientes de partibus Burgundiae et Austriae vel Baioariae, seu Provinciae et Septimaniae et pars Langobardorum; and coinungentes se ad supradictam civitatem ex utraque parte exercitus. Then the Lord King Charles undertook the journey towards the lands of Hispania by two roads: one through Pamplona, where the aforementioned great king arrived in Zaragoza. Here came those from the regions of Burgundy, Austrasia, Bavaria, Provence, Septimania and Lombardy; and thus the armies of both sides met in said city. At the head of the same route was Charlemagne, accompanied by the high dignitaries of the Court. On the way, when he arrived at Chasseneuil, in the Charente, the Emperor stopped to celebrate Easter, leaving in said town, henceforth the royal residence, his wife Hildegard, who due to her advanced state of pregnancy could not continue the journey. Pascha vero in Aquitania apud Cassinoillum natalem celebravit . (Ex Eginhard Annal. de Gestis Caroli Mag. ad. ann. 778). He celebrated Easter in Aquitaine, in the place of Chasseneuil. Some authors place Chasseneuil near Poitiers. Charlemagne, leaving his wife in Chasseneuil, crosses the Garonne that delimits the Aquitanians from the Vascones.