The immense sums expended by Gregory XIII. in endowing colleges and subsidising Catholic sovereigns proved too great a strain on the resources of the papal treasury. To raise funds the Pope was obliged to increase the taxes, to impose tariffs on imports and exports, to curtail the privileges of certain sections of his subjects, and to recall many of the fiefs granted to feudal proprietors. These measures led to grave discontent among all classes. Secret societies were formed, in which the dispossessed nobles encouraged their poorer followers to acts of violence. Robber bands led by some of the younger barons made their appearance in all parts of the Papal States, so that even in the very streets of Rome the lives of the papal officials were not secure. Gregory XIII. was too old to cope with such a serious situation. Before order could be restored he passed away leaving his successor a very difficult task. After a conclave lasting only four days Cardinal Felice Peretti, better known as the Cardinal di Montalto, secured the required majority of votes, and ascended the papal throne under the name of Sixtus V.[5] (1585-90). He belonged to a very poor family in Italy, had joined the Franciscans as a boy, and had risen from office to office till at last in 1570 he was created cardinal. At the time of his election he was practically unknown, partly because he was not a scion of one of the leading families of Italy, partly, also, because during the reign of Gregory XIII. with whom he was in disagreement he lived a retired life, devoting himself almost completely to the preparation of an edition of the works of St. Ambrose. Throughout the Catholic world the news of his elevation was received with joy. He was a man of strict life and tireless activity, more inclined to act than to speak, unwilling to burthen his spiritual or temporal subjects with new laws, but fully determined to enforce those already made, and almost unchangeable in his views once his decision had been given.