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 Beck until it joins the River Ravensbourne which in turn joins the River Thames. The name probably derives from the town of Beckenham - Beohha's homestead (Old English). An alternative derivation may be the Middle English "beck" (stream), which would be an example of a tautological name. However this usage is not common in southern England. River Beck The River Beck is one of the tributaries of the River Ravensbourne in south London. The source of the River Beck is in Spring Park () where Shirley and West Wickham meet. For its first mile or so it forms the border between