Bainbridge was immediately sent with an army to lay siege to Ferrara, but the creation of the Holy League relieved the papacy of some pressure by involving Spain against the French forces. In recognition of England's part in this formation Pope Julius granted the spiritual and temporal command of the castle and domain of Vetralla to Bainbridge (as representing the English crown) in 1511, and in 1512 the Cardinal had a marble sculpture incorporating his own arms and the English royal arms installed upon the grand stair of the palazzo comunale of Vetralla. Pope Julius II was succeeded on his death by Pope Leo X (Giovanni de' Medici), who was elected with the support of the della Rovere cardinals. Bainbridge took part in the 1513 papal conclave, where at the first scrutiny he himself received two votes, and gave his own vote to Fabrizio del Carretto, Grand Master of the Knights Hospitaller.