Anglo-Scottish border English king, Edgar the Peaceful, at his council in Chester. After Kenneth had reportedly done homage, Edgar rewarded Kenneth by granting him Lothian. Despite this transaction, the control of Lothian was not finally settled and the region was taken by the Scots at the Battle of Carham in 1018 and the River Tweed became the "de facto" Anglo-Scottish border. The Solway–Tweed line was legally established in 1237 by the Treaty of York between England and Scotland. It remains the border today, with the exception of the Debatable Lands, north of Carlisle, and a small area around Berwick-upon-Tweed, which was taken
River Glen, Northumberland to Bede, "washed them with the water of absolution in the river Glen, which is close by" (Tomlinson, 1888, p. 504). Because there is a reference to a similarly named river in Historia Brittonum by the Welsh author Nennius, some (Ekwal, 1928; Hunt, 2005) have hypothesized that the legendary British warrior Arthur began his campaign against Anglo-Saxon invaders near the confluence of the Glen and Till: The area around the Glen was the setting for some of the bloodiest border warfare between Scotland and England. The Battle of Humbleton Hill was fought near the river in 1402, as was the