The next bishop was a Saxon abbot named =Trumhere= (659-662), and he was succeeded on his death by =Jaruman= (662-667). Both were appointed by King Wulphere, son of Penda, who had been raised to the Mercian throne by his people; and both were Saxons who had been consecrated in the Northumbrian Church. Jaruman was a most energetic bishop, and he appears to have been sent into Essex to reconvert the people there who had fallen into paganism again; his mission was a success, and Jaruman returned to his own people in Mercia. It was during Jaruman's episcopate that difficulties arose between the Church in Britain and the Church in Rome. Rome had sent messengers to Britain, and they had been the means of converting a large portion of the south coast and of East Anglia; but there were differences in the two Churches, and one particularly caused much trouble. The Roman Church had always kept Easter Day on a Sunday, but the British Church held this feast on March 14, whatever day of the week it might be. A synod was called at Whitby, and it was decided, mainly through the instrumentality of Wilfrid, the future bishop of York, in favour of the Roman Sunday. In this way, it may be said, began the rule of Rome in the English Church. Shortly after, in 667, Jaruman died, and no successor was appointed for two years. During this time, Theodorus of Tarsus became Archbishop of Canterbury, and to him belongs the credit of making the English Church: before, each kingdom had had its own Church, but Theodore welded them together into one whole, and completed their dependence on the bishop of Rome. Wilfrid was made bishop of York, and St. Chad, who had been consecrated to that see, retired to the abbey at Lastingham, only in the next year, 669, to be reconsecrated as bishop of Mercia by the new Archbishop of Canterbury. =St. Chad= or =Ceadda= (669-672) made his seat at Lichfield, and in so doing founded the diocese of Lichfield. St. Chad, as has been stated before, was the patron saint of Lichfield. What is known of him is principally derived from Bede's "Ecclesiastical History of the English Nation." From this we learn that when not on his missionary travels over the diocese he spent most of his time in prayer, and in meditation on death and supernatural things. His method was to proceed from place to place in his diocese on foot; and there is a story of Theodore taking St. Chad in his arms and lifting him on to a horse which he presented to him. He founded the abbey of Barrow-on-Humber, which King Wulphere endowed with fifty hides of land. His headquarters, as we have said, were at Lichfield, and he built, or finished building, a small church near what is still known as St. Chad's Well, at the eastern end of Stowe Pool.