Editors. "Hugh O'Neill, Earl of Tyrone, leads a rising in Ulster". The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=15474, accessed 16 April 2014.]
In Ireland, a rising breaks out in Ulster against Elizabeth I. This is led by Hugh O'Neill, Earl of Tyrone, in alliance with Hugh O'Donnell, Earl of Tyrconell. These Catholic rebels appeal to Philip II of Spain for support.