Charles I leads troops out of York to relieve Newcastle but on the 28th the Scots defeat a separate force at Newburn-on-Tyne and on the 30th they enter Newcastle.
Editors. "Battle of Newburn". The Literary Encyclopedia. First published 01 January 2010; last revised 30 November -1.
[http://www.litencyc.com/php/stopics.php?rec=true&UID=2199, accessed 27 April 2015.]