William of Orange begins issuing letters of marque to a group of
rebel nobles known as the 'Beggars of the Sea', authorizing them to
plunder Spanish ships.
Citation:
Editors. "William of Orange endorses the 'Beggars of the Sea'".
The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=15093, accessed 24 May 2013.]