France and Spain sign the Treaty of Barcelona. By the terms of this agreement, France ceded Roussillon and Cerdágne to Spain. In return, Spain promised to remain neutral during any French invasion of Italy.
Editors. "Treaty of Barcelona". The Literary Encyclopedia. First published 01 March 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=9822, accessed 24 May 2015.]