In the aftermath of a disastrous earthquake at Sparta, the helots revolted but in the end had to surrender the stronghold of Ithome (the future Messene).
Citation:
Bouchard, Elsa. "Third Messenian War".
The Literary Encyclopedia. First published 01 March 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=11205, accessed 23 May 2013.]