Constantine was a Greek-descended pope who served as the bishop of Rome from 708 until his death in 715. Born in Tyre, he was deeply familiar with Eastern traditions and the Byzantine court, having previously served as a papal legate. His leadership occurred during the Byzantine Papacy, a period when the Roman pontiffs required imperial approval. He is most notable for traveling to Constantinople to negotiate with Emperor Justinian II, seeking to prevent a significant rift between the Eastern and Western churches regarding the Trullan canons.