Pope St. Vitalian tried to win over the Monothelites who then held sway in Constantinople, and was the reigning pope at the time of the Synod of Whitby. He died in 672.

Brief profile of Pope St. Vitalian.

Short biography of Pope St. Vitalian, from the book by Joseph Brusher.

Short biography of St. Vitalian, by Karen Rae Keck.