 Bede writes that James lived in a village near Catterick , which " bears his name to this day " . He reports that James undertook missionary work in the area and lived to a great age . During the reign of King Oswiu of Northumbria , James attended the royal court , for he celebrated Easter with Oswiu 's queen , Eanflæd , Edwin 's daughter . Both James and Eanflæd celebrated Easter on the date used by the Roman church , which led to conflicts with Oswiu , who celebrated Easter on the date calculated by the Irish church . These dates did not always agree , and was one of the reasons that Oswiu called the Synod of Whitby in 664 to decide which system of Easter calculation his kingdom would use . 
