Clement took a warm interest in the expedition of the Pretender, eon of James IL, in 1715, and furnished him with money. After the failure of that attempt, the Pretender, being forsaken by France, retired to Italy under the name of the Chevalier de St. George, and Clement appointed the town of Urbino for his residence. He after wards negotiated his marriage with Clementine Sobieski, which was celebrated at Monte Fiascone, at the pope's expense, who gave to the married couple a palace to reside io, with an annual pension of 12,000 crowns. The court of Rome did not for a long time after give up its favourite scheme of regaining England to Catholicism, by means of the Stuarts.
Clement was more profitably employed In frustrating the schemes of the Turks, who, having invaded the island of Corfu in 1716, were threatening Italy with an invasion. The pope sent a squadron to join the Venetians, he levied a contribution upon the clergy of all Italy to defray the expenses of the war, and he prevailed on the emperor, Charles VI., to join Venice against the Porte. This led to the brilliant campaign of Prince Eugene, who defeated the Turks at Peterwaradin, and took Tcmeswar. The Turks were also obliged to raise the siege of Corfu.
After the fall of the intriguing Alberoni, in 1719, Clement succeeded in settling his disputes with Philip V. of Spain, and his Nunzio was again received at Madrid. Europe was now at peace, and Clement enjoyed a short period of rest, after a long series of agitations, until March 1721, when he died, after a pontificate of more than twenty years. Iu his private character he was amiable and generceia, and his WW1& were IITOprOlChilble. HS was moderate in providing for his sephews, who owed their elevation more to his succesaors than to himself, Ile embellished Home, and established the Calcozrafia Cameral., which has since given to the world many splendid engravings; be encouraged the art of mosaic, and he introduced at Home the manufsetnry of tapestry, on the model of the 0obelins. He added to the Vatican library, and to the museum which Is annexed to it; and he patronised mon of letters and of science. A fine edition of his deastale, bolls, and constitutions, was published by his nephew, Cardinal Antabals Albani, after his death, ' Bullarium Cleimentis XL, I vol., fol. lie wrote also several Latin homilies, which be recited on solemn festivals, and which were translated into Italian by Cram:imbed.