In September they signed a treaty by which della Rovere was relieved of all ecclesiastical censures and was left free to retreat to Mantua with all his artillery, as well as the rich library collected in Urbino by the former duke Federico III da Montefeltro.
In September, a treaty was signed that freed della Rovere from all ecclesiastical censures and allowed him to depart for Mantua with his artillery and the rich collection of books previously owned by the late duke Federico III da Montefeltro in Urbino.