The Dutch noblemen known as the 'Beggars of the Sea' had been
plundering Spanish shipping in an attempt to oppose the government
of the Duke of Alva. Now, having been expelled from English ports,
they captured the town of Brielle, an act that marks the effective
beginning of the Dutch War of Independence, since after this, many
more Dutch towns began to support the rebels.
Citation:
Editors. "The Dutch 'Beggars of the Sea' spark the Dutch War of Independence".
The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=15135, accessed 22 May 2013.]