France and Spain sign the Treaty of Escurial, promising to
guarantee each other's possessions and form an alliance against
England. By the terms of this agreement, France will help Spain
recover Gibraltar and will withdraw the trade concessions given to
England by the Treaty of Utrecht. The Union of the two branches of
the Bourbon family is declared indivisible and this forms the first
Family Compact.
Citation:
Editors. "Treaty of Escurial between France and Spain against England".
The Literary Encyclopedia. First published 01 April 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=17365, accessed 18 May 2013.]