I. The Bishop of Vienne has anticipated their appeal. He proposes to arbitrate with impartiality.
When we read your letter, beloved, which was brought to us by our sons Petronius the presbyter and Regulus the deacon, we recognized how affectionate is the regard in which you hold our brother and fellow bishop, Ravennius: for your request is that what his predecessor deservedly lost for his excessive presumption may be restored to him. But your petition, brothers, was forestalled by the bishop of Vienne, who sent a letter and legates with the complaint that the bishop of Arles had unlawfully claimed the ordination of the bishop of Vasa. Accordingly, as we had to show such respect both for the canons of the fathers and for your good opinion of us, that in the matter of the churches' privileges we should allow no infringement or deprivation, it were incumbent on us to preserve the peace within the province of Vienne by employing such righteous moderation as should disregard neither ancient usage nor your desires.
Source: Letters (New Advent)