Editors. "A rival to the Swabian League is formed". The Literary Encyclopedia. First published 01 November 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=14180, accessed 21 May 2013.]
Members of the German Swabian League renew their allegiance for another ten years, but the Duke of Wurttemberg, the Elector Palatine and the Margrave of Baden retreat from this union to form a rival pact, which is joined by Frederick the Wise of Saxony in 1515.