ランゴバルド王国
Benedict returned in Rome at the time of Pope Constantine where he opposed the claim of the bishop of Pavia, Armentarius, that Pavia were immediately subject to Rome. Benedict reminded to the Pope that Pavia historically was under the Metropolitan See of Milan and that the bishop of Pavia was used to be consecrated by the one of Milan. The pope however ruled in favour of Armentarius, perhaps due to a privilege granted at the times of Evodius or because Pavia was the capital of the Kingdom of the Lombards.