Editors. "The Spanish besiege Casale". The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=16003, accessed 21 April 2014.]
In the war of Mantuan Succession the Spanish besiege the town Casale. This is an important point for control of the Po Valley, and French aid forces Spain to give up the siege. However, this merely means that they move to lay siege to Mantua instead.