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 20 June 2013.]
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 .