John Casimir of the Palatinate and Henry of Navarre sign a treaty
of alliance, as fellow Protestants hostile to the militant Catholic
rule of France under Henry III and the Catholic League.
Citation:
Editors. "John Casimir of the Palatinate signs an alliance with Henry of Navarre".
The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=15349, accessed 23 May 2013.]