the north. North of the Tyne, Northumbrians maintained partial political control in Bamburgh. The rule of kings continued in that area with Ecgberht I acting as regent around 867 and the kings Ricsige and Ecgberht II immediately following him. According to twelfth-century historian Symeon of Durham, Ecgberht I was a client-king for the Norse. The Northumbrians revolted against him in 872, deposing him in favor of Ricsige. Although the A and E recensions of the Anglo-Saxon Chronicle report that Halfdan was able to take control of Deira and take a raiding party north of the River Tyne to impose his rule on Bernicia in 874, after Halfdan's death (c. 877) the Norse had difficulty holding on to territory in northern Bernicia. Ricsige and his successor Ecgberht were able to maintain an English presence in Northumbria. After the reign of Ecgberht II, Eadwulf "King of the North Saxons" (r. 890–912) succeeded him for control of Bamburgh, but after Eadwulf rulership of this area switched over to earls who may have also been related to the last of the royal Northumbrian house. Kings Æthelfrith (r. 593–616) Æthelfrith was the first Anglo-Saxon leader to hold the thrones of both Deira and Bernicia, and so he ruled over all the people north of the Humber. His rule was notable for his numerous victories over the Britons and the Gaels. Edwin (r. 616–633) Edwin, like Æthelfrith, was king of both Deira and Bernicia and ruled them from 616 to 633. Under his reign the Isle of Man and the lands of Gwynedd in Northern Wales were incorporated into Northumbria. Edwin married Æthelburh, a Christian Princess from Kent in 625. He converted to Christianity two years later after a period of heavy consideration and after consulting numerous advisors. Edwin fell in battle in 633 against Cadwallon of Gwynedd and the pagan Penda of Mercia. He was venerated as a saint and martyr after his death. Oswald (r. 634–642) Oswald was a King of Bernicia, who regained the kingdom of Deira after defeating Cadwallon in 634. Oswald then ruled Northumbria until his death in 642. A devout Christian, Oswald worked tirelessly to spread the religion in his traditionally pagan lands. It was during his reign that the monastery at Lindisfarne was created. Oswald fell in the Battle of Maserfield against Penda of Mercia in 642 but his influence endured because, like Edwin, Oswald was venerated as a