Editors. "Protestants in Hungary revolt against the Habsburgs". The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=15608, accessed 17 April 2014.]
A Protestant revolt breaks out in Hungary against the Habsburgs. The rebels join forces with nobleman Stephen Bocskai, who invades Hungary from Transylvania. He later allies with the Ottomans, and is recognised by the Sultan of Turkey as Prince of Transylvania .