The humble servant of God found means to decline that dignity, by recommending St. Theodorus as most capable, but refused not to share in the laborious part of the ministry. The pope therefore asked him to be the companion, assistant, and adviser of the apostolic archbishop, which charge Adrian willingly took upon himself.
In traveling through France with St. Theodorus, he was stopped by Ebroin, the jealous mayor of the palace, who feared lest the emperor of the East had given these two persons, who were his born subjects, some commission in favor of his pretensions to the western kingdoms. Adrian stayed a long time in France, at Meaux, and in other places, before he was allowed to pursue his journey. St. Theodorus established him as abbot of the monastery of SS. Peter and Paul, afterward called St. Austin, near Canterbury, where he taught the learned languages and the sciences.
He had illustrated this island by his heavenly doctrine, and the bright example of his virtues, for the space of thirty-nine years, when he departed to our Lord on the 9th of January, in the year 710. His tomb was famed for miracles, as we are assured by Joscelin the Monk, quoted by William of Malmesbury and Capgrave, and his name is inserted in the English calendars.