Editors. "Henry II returns to Verdun at threats from Mary of Hungary". The Literary Encyclopedia. First published 01 November 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=14837, accessed 20 May 2013.]
Henry II of France, who has been pursuing an aggressive campaign along the German border, retreats to Verdun after being threatened by Mary of Hungary, Regent of the Netherlands, and Count Mansfeld.