The War of Castro, which has been fought since 1641, is ended by
the Peace of Ferrara. The conflict had pitted the forces of Pope
Urban VIII against those of the Duke of Parma, aided by Venice,
Modena and Tuscany.
Citation:
Editors. "The Peace of Ferrara".
The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=16224, accessed 22 May 2013.]