Henry, Duke of Guise, and his younger brother Louis, Cardinal of
Guise, are both assassinated on the orders of King Henry III, and
the Cardinal of Bourbon and the Duke of Joinville are arrested.
These murders were carried out in defence of the King's weakening
power: in October, a meeting of the French Estates-General had
suggested that he should give up his crown to the Duke of Guise. As
a result of these deaths, leadership of the Catholic League passes
to the Duke of Mayenne.
Citation:
Editors. "Henry Duke of Guise and Louis Cardinal of Guise are assassinated".
The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=15383, accessed 24 May 2013.]