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 Nene River Nene The River Nene ( or : see below) is a river in the east of England that rises from three sources in Northamptonshire. The tidal river forms the border between Cambridgeshire and Norfolk for about . It is the tenth-longest river in the United Kingdom, and is navigable for , from Northampton to The Wash. As with most hydronymy in England (such as the Ouse and Avon), the name is likely to be of Celtic origin. The same name appears in the 'Neen', the former name of the river Rea in Shropshire, which is retained in the hamlet