7 Nevertheless he was not discouraged. He determined, after a short while, to go to Rome and visit the Apostolic See. There he would humbly ask the Vicar of Jesus Christ himself for a sacred mandate. Fortified with this and by the grace of God he would more readily attain the difficult goal of his most ardent desires. "He came, therefore, without mishap to the home of the Blessed Apostle Peter," and having venerated with great piety the tomb of the Prince of the Apostles, begged for an audience with Our predecessor of holy memory, Gregory II.
Source: Ecclesiae Fastos (Vatican.va)