King Charles I of Naples lost the Island of Sicily in 1282 as a result of the uprising called the "Sicilian Vespers". On 22 January 1284 the City of Rome drove out the forces of King Charles in an uprising of their own. His Vicar was imprisoned, and his own Senatorship was cancelled. Pope Martin, who was a perpetual exile from Rome, and really had no influence, agreed to the appointment of two new Vicars, Annibaldo Annibaldi and Pandolfo Savelli, the brother of Cardinal Jacopo Savelli. The troublemaker from the Conclave of 1281 in Viterbo, Riccardo Annibaldi, was compelled to do penance at the residence of Cardinal Matteo Rosso Orsini. Charles finally died on 7 January 1285. His creature, Pope Martin, was desolate and abandoned. Martin IV died at Perugia on 28 March 1285, after a three-day illness. At the time of his death there were eighteen cardinals, fifteen of whom attended the Conclave of 1285. This was Cardinal Matteo Rosso Orsini's eighth Conclave. The opening ceremonies of the Conclave, unusually, took place only four days after the death of the Pope, on 1 April. There was no compulsory enclosure at Perugia, as there had been in Viterbo in 1281. Next morning, 2 April, Cardinal Jacopo Savelli was elected pope on the first scrutiny.