Scottish sources place the Battle of Otterburn on the 5 August 1388, however, ENglish sources disagree placing the battle on the 19 August 1388. The battle, part of the continuing border war between England and Scotland, was a victory for the Scots, led by James Douglas, 2nd Earl of Douglas, over Harry Hotspur, son of the Earl of Northumberland. Although a Scottish victory Douglas was killed in the battle.
Editors. "English defeated by the Scots at Otterburn". The Literary Encyclopedia. First published 01 March 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=9571, accessed 20 February 2017.]