d.701. Pope from 687. A native of Palermo of Syrian descent, he was elected pope after a contest between two other candidates. He consecrated Willibrord, bishop of the Frisians (695), and ordered Wilfrid of York restored to his see. His refusal to recognize as authoritative the Trullan Synod which favored Eastern custom over Latin led the emperor to seek his arrest. Byzantine power was, however, weak in Italy at the time, and Sergius was able to defy him.