Federico da Montefeltro, also known as Federico III da Montefeltro (1422 – 1482), was the Duke of Urbino and one of the most successful Italian condottieri during the Italian Renaissance.
In 1454, Federico laid siege to the city of Monteriggioni in Tuscany under the orders of the Florentines. In fact, the Florentines laid siege to the city to find an important artifact hidden beneath Monteriggioni. However, Mario Auditore, Monteriggioni's leader, managed to subdue the attackers with his leadership.