Sir Robert Bowes, Warden of the East March, is captured by the
Scots at Hadden Rigg, while he is undertaking a punitive raid into
their territory of Teviotdale.
Citation:
Editors. "The Warden of the East March is captured by the Scots".
The Literary Encyclopedia. First published 01 November 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=14671, accessed 25 May 2013.]