The conflict between these two influences reached its height in the time of Alfred. Oswald completed the church began by Edwin: it remained under the rule of Aidan, as no evangelists were sent from the south to take the place of Paulinus, though it is said that James the Deacon continued his missionary work in the North Riding. In 642 Oswald was killed in battle, and Deira and Bernicia were again split up into two kingdoms. With this division came also religious difficulties between the Church of Iona and the Catholic Church of the south. These difficulties culminated in the Synod of Whitby, 664, at which the Catholic party, led by the great Wilfrid, perhaps the greatest of all bishops of York, defeated their opponents. After the council, Colman, then Bishop of Lindisfarne, resigned, and his successor, Tuda by name, was killed with many of his monks, by a pestilence at Lindisfarne. The ground therefore seemed to be cleared for Wilfrid. At this time Oswy was king of Bernicia, and Alchfrid his son governed Deira, probably as an independent province. Alchfrid induced Wilfrid to accept the see of York. Wilfrid at once set to work to strengthen the position of the Catholic Church and to destroy the influence of the Church of Iona in his diocese. He refused to be consecrated by a bishop of the Church of Iona, sent for that purpose to Gaul. He probably was determined not to acknowledge the supremacy of any other English see over his own. He was absent for three years, and Oswy, who favoured the Church of Iona, took advantage of his absence to appoint Ceadda (Chad) to the see of York. On his return, after being duly consecrated, Wilfrid retired without a struggle to his own monastery at Ripon. In 669, Theodore, the Archbishop of Canterbury, intervened to make peace between the two factions, and at his instigation Ceadda resigned the see in favour of Wilfrid, who at once began his great period of activity in the diocese. Whatever may be our sentimental liking for the older and more national Church of Iona, there can be no doubt that the Catholic Church was the chief support of culture, learning, and civilisation in Europe, and Wilfrid was a worthy representative of it. During his episcopate the see of York probably played the most important part it has ever taken in the history of England. At that time, more than any other, the future of learning, civilisation, and humanity was in the hands of the priests, and the English _toto divisi ab orbe_ were kept in touch with the slowly reviving culture of Europe by the cosmopolitan Church of Rome. Wilfrid was undoubtedly the best representative of that culture in England. It was his object not only to Catholicise the north of England, but to educate it. He travelled continually through his vast diocese with a train of builders, artists, and teachers. His architectural activity in particular was very great. He repaired the minster at York, which had