Editors. "Laon is taken". The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=15473, accessed 24 April 2014.]
Henry IV's forces take Laon, the last stronghold of the Catholic League. Now the only remaining site of opposition to Henry's kingship is in Brittany, where the Duke of Mercoeur is supported by Spanish troops.