Editors. "Johan van Oldenbarneveldt is arrested for treason". The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=15815, accessed 18 April 2014.]
Johan van Oldenbarneveldt, Advocate of Holland and Counter-Remonstrant opponent of the more radically Calvinist Maurice Prince of Orange, is arrested on a charge of treason.