According to Fredegar, who seems to have been personally interested in this event, the last which he recorded, both were the victims of divine judgement, for they had sworn friendship in holy places and had subsequently despoiled land to enrich themselves and made war on each other. After the battle at Autun, Willibad's tent had been pillaged and his wealth dispersed. A hoard of coins found at Buis in Saône-et-Loire have been hypothesized to be from his treasure.
This incident, as recorded by Fredegar, who appears to have had a personal stake in it, resulted in both victims being subjected to divine retribution, having sworn an oath of friendship in sacred locations and subsequently exploiting land for personal gain, leading them into conflict. After the Autun battle, Willibad's tent was looted, and his riches were dispersed. A cache of coins discovered at Buis has been proposed as a possible source of his treasure.