There is a surviving charter of King Odo dated 889, in which the king appears to grant the count of Osona to the bishop, but most of the text is of a later date and is unreliable. The king did grant the fortress at Artés to the bishop, as well as one third of public revenue in the county. By 911, when the will of Count Wifred II granted a third of the profits of the mints in Osona to the bishop, the latter had already replaced the viscount as the most powerful person in the county. During the reign of Louis IV (936–54), the bishop of Vic received royal confirmation of his monetary right. In 957, without any authority to do so, the bishop began keeping back all the profits of the mints for the church. Throughout the 10th century the counts of Osona sought to re-settle the west of the county and fortify the frontier. To this end they granted many frontier castles to the bishop to hold.
