Joachim II, Margrave of Brandenburg, assists Ferdinand I of Hungary
in an attack on the Ottomans at Buda.
Citation:
Editors. "Joachim of Brandenburg attacks Turkey".
The Literary Encyclopedia. First published 01 November 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=14666, accessed 21 May 2013.]