Editors. "Sebastian, King of Portugal, invades Morocco". The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=15232, accessed 19 May 2013.]
In the Battle of the Three Kings, Sebastian, King of Portugal, invades Morocco, but is killed at Alcazar. The other two kings involved in the conflict - the deposed Sultan, al-Mutawakkil, and the new Sultan, Abd al-Malik - also die in the course of the fighting. Sebastian's great-uncle, Cardinal Henry, aged 67, becomes King of Portugal, but dies two years later without heirs.