Editors. "The Earl of Northumberland is executed at York for treason". The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=15149, accessed 05 December 2013.]
The Earl of Northumberland, who had fled to Scotland after his involvement in the Northern Rebellion of 1569, is brought back to York, where he is executed for treason.