Pope Pelagius I

Pope Pelagius I (died 3 March 561) was the bishop of Rome from 16 April 556 to his death on 3 March 561. A former apocrisiarius to Constantinople, Pelagius I was elected pope as the candidate of Emperor Justinian I, a designation not well received in the Western Church. Before his papacy, he opposed Justinian's efforts to condemn the "Three Chapters" in order to reconcile theological factions within the Church, but later adopted Justinian's position.

Source: Wikipedia — https://en.wikipedia.org/wiki/Pope_Pelagius_I